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Frequently Asked Questions - Ceiling Trap Door

What is a ceiling trap door?

A ceiling trap door is an openable panel set into a false ceiling that gives access to the services concealed above it — HVAC units, fire pipes and valves, sprinklers, smoke detectors, electrical conduits and plumbing — without cutting or dismantling the ceiling. It consists of an outer frame fixed to the ceiling structure and one or more shutters finished in the same material as the surrounding ceiling.

There is no difference. They are two names for the same product. Ceiling trap door is the common term in India; ceiling access panel is more usual in the UK, North America and the Gulf. The same element is also called an access panel ceiling, ceiling access hatch, inspection hatch, gypsum access panel, access door or ceiling door.

Order the size the equipment needs — not the size a catalogue offers. SKYHATCH ceiling trap doors are made to any custom dimension in exact millimetres, so the opening should be decided by what has to be reached, serviced and eventually removed through it. Ask the services consultant, the design team or the equipment vendor what access the machine actually requires, and order that.

For routine access points, PLANEA covers 250 × 250mm to 1200 × 600mm, with 300 × 300, 450 × 450, 600 × 600 and 600 × 1200mm held in stock. For anything larger, ZENITH+ is made to the project dimension up to 6000 × 2400mm and larger on request, with multiple shutters that slide aside to leave the whole opening clear. There is no minimum order quantity and no standard size to design around.

Once the opening is decided, two dimensions matter and they are not the same number. A is the clear opening size — what you see in the finished ceiling, edged by the shadow groove. B is the framing size — the internal dimension of the ceiling framing, which is larger because the ceiling board overlaps the outer flange of the trap door.

Once the opening is decided, two dimensions matter. A is the visible opening — the shutter size, from the inside of the outer frame to the inside of the outer frame. B is the outer-to-outer size of the complete frame. B = A + 29 + 29 for PLANEA, and B = A + 26.8 + 26.8 for ZENITH+. A 600 × 600mm PLANEA opening therefore has an outer frame size of 658 × 658mm.

For a new gypsum board ceiling, order A. For a POP ceiling, order B: the opening left in the POP, with the wire mesh protruding into it, is equal to B. If the sub-frame is already tied, ordering B keeps things simple.

A is the visible opening in the finished ceiling, edged by the 2–3mm shadow groove — the shutter size. B is the outer-to-outer size of the trap door frame, which is where the sub-frame is set out. In a gypsum ceiling the board runs over the flange from B to A. Specify A for new ceilings; give B for POP ceilings or where the framing already exists.

Choose PLANEA (CTD26) for standard openings up to 1200 × 600mm where the access point is routine and stock availability matters. Choose ZENITH+ (CTD25) when the opening is set by equipment rather than convention, when it exceeds 1200 × 600mm, when you need multiple shutters sliding aside for a fully clear opening, or when the panel must be anchored to the structural soffit independently of the ceiling grid.

ZENITH+ (CTD25) is made to any custom size up to 6000 × 2400mm, and larger on request. The largest delivered to date is 18 feet by 8 feet. Above single-shutter width the panel becomes a multi-shutter assembly, with every shutter sliding to one or both sides to leave the full opening clear.

Any 10–12mm material: MR gypsum board, prelaminated particle board, WPC or PVC board, ACP, laminate, veneer on base board, calcium silicate board, honeycomb lightweight panels, or other decorative material. The infill is finished on site to match the surrounding ceiling, which is what makes the panel visually disappear.

No, and it is worth understanding why. SKYHATCH is an architectural ceiling access system whose shutter carries the same finish material as the ceiling around it. Aluminium is non-combustible — Euroclass A1 for reaction to fire — but SKYHATCH is not a fire-resistance-rated assembly and IQUBX makes no such claim. Where a project requires a rated assembly for compartmentation, the correct product is a fire-rated steel hatch in a fixed size, which is a different product class. Non-fire-rated is the norm across the premium seamless-finish ceiling access category internationally.

SKYHATCH is certified GreenPro Ecolabel Type 1 by the Products & Services Council of the CII — a third-party verified, multi-criteria, life-cycle assessment rather than a self-declared claim. It contributes to LEED, IGBC, GRIHA, WELL, BREEAM, Green Star, Estidama and GSAS submissions, and to corporate sustainability and net-zero reporting, earning credits under the Materials and Resources section of IGBC ratings.

PLANEA fixes to the sub-frame of the false ceiling with screws. ZENITH+ is anchored to the true ceiling soffit — the RCC slab or roof structure — using GI strips, butterfly hangers or MS threaded rods, so the weight of a large trap door is carried by the structure rather than by the false ceiling framing. Loading ceiling framing with a large trap door leads to deterioration and, in the worst case, accidents.

Yes. SKYHATCH can be installed into an existing opening, including in place of an old wooden trap door. Measure the existing opening and order by B, the outer frame size. Because frames are jointed rather than crimped, a unit can also be resized after fabrication.

Only a 2–3mm shadow groove is visible at the shutter and frame joint. There is no visible flange and, with PLANEA’s push lock, no visible keyhole. Once the infill is finished to match the ceiling, the panel blends seamlessly with the ceiling.

No. IQUBX supplies from a single unit upwards, pan-India and for export.

PLANEA standard sizes are stocked and available through IQUBX, through distributors and online. ZENITH+ is made to order — share the gypsum opening size, ceiling finish and quantity for a quotation. IQUBX distributors operate across India, the Middle East and Nepal. PLANEA standard sizes are also on Amazon India.

Because the shutter never has to be detached from the frame.

Conventional ceiling access panels use temporary hook or flange engagement at two corners. To open one, the shutter has to be supported by hand, unhooked, carried down and set aside, then lifted back and re-engaged afterwards — usually by one maintenance worker, at height, on a ladder. It can slip on the way down and it can fall while being re-hung. At small sizes this is manageable. At large sizes it is a genuine safety risk.

The SKYHATCH sliding hinge works differently. The shutter stays engaged with the outer frame throughout, sliding aside rather than coming off, and is held additionally by a stainless steel safety wire. Nothing is carried down a ladder and nothing can be dropped. The shutter can still be removed deliberately for any reason if required – like  full access above the ceiling, realignment of shutters or frames or even during installation of bigger size access panels.

Three further things follow from the same design. Large shutters can be locked properly — with an Allen cam lock built for the load — rather than relying on a push lock that cannot hold a heavy shutter closed. Heavier engineered sections with built-in stiffeners keep shutters flat, so they do not sag or warp and stop seating correctly over time. And on large ZENITH+ assemblies the frame is anchored to the RCC soffit or roof structure, so the weight goes to the slab and never loads the false ceiling — which is what prevents the ceiling deterioration and collapse risk that comes from hanging a large trap door off ceiling framing.

Because the design almost every manufacturer uses cannot be scaled up. The limit is the mechanism, not manufacturing capacity.

Conventional modular panels share the same basic construction worldwide: a thin aluminium frame crimped at the corners, a shutter engaged on a hook or extended flange at two corners, and a push lock holding it closed. At 600 × 600mm this works well. Enlarged, each element fails for a different reason.

A push lock is a light mechanism and cannot hold the load of a large shutter closed. Hook engagement is temporary by design, so a large shutter has to be supported by hand while it is unhooked, carried down and lifted back — awkward and unsafe at height. And a thin crimped section has no capacity to keep a large shutter flat, so it sags and warps over time until it no longer seats properly. Crimping also means the frame cannot be opened, resized or adapted once made.

So most modular panels are offered at 600 × 600mm, some reach 1200 × 600mm, and beyond that the market effectively stops. Faced with a large opening, the profession improvises — a wooden trap door fabricated on site that deteriorates within a year or two, or several small panels in a row that clutter the ceiling and still leave crossbars across the opening.

Solving it required changing the mechanism rather than enlarging the panel. SKYHATCH ZENITH+ uses a sliding hinge, so shutters stay engaged with the frame while sliding aside; heavier engineered sections with built-in stiffeners, so shutters stay flat; Allen cam locking built for the load; jointed rather than crimped frames; and anchoring to the RCC soffit, so the weight goes to the structure and not to the false ceiling. That combination makes custom sizes up to 6000 × 2400mm practical, and larger on request.

Because the size of the opening is decided by the equipment above the ceiling, not by convention.

An air handling unit, a chilled water fan coil unit, a ductable indoor unit, a pump or a valve assembly has to be reached for routine service, opened up for repair, and eventually removed and replaced entirely. Replacement is the demanding case: a machine has to physically pass through the opening, along with the people and tools handling it. A 600 × 600mm panel serves an inspection. It does not serve an equipment change.

The same applies to service zones rather than single machines. Above a hospital corridor, an airport terminal or an office floor plate, the plenum carries ducting, fire pipes, sprinklers, cabling and plumbing in parallel runs. Reaching a length of that requires a long opening, not a series of portholes.

Large format access also protects the ceiling itself. Where the opening is undersized, maintenance teams cut the ceiling open, and the board and plaster are patched afterwards — repeatedly, over the building’s life, with visible deterioration and cost every time.

The requirement has always existed. What has not existed is a product that meets it, which is why so many projects settle for a compromise that is paid for over the next twenty years.

Mostly, they are not.

A 600 × 600mm panel allows a technician to put an arm and a head through it. That is adequate for inspecting a valve, checking a detector, or reaching a junction box. It is not adequate for working on a machine.

What happens in practice is one of three things. The technician works blind through an opening too small to see or reach properly, which makes the job slower and the work poorer. Or several small panels are opened at once and the work is done in pieces around the crossbars between them. Or — most commonly, when the machine has to come out — the ceiling is cut open, and the board and plaster are repaired and repainted afterwards.

That third outcome is the real cost of undersized access: delay, extended downtime, dust and disruption in occupied space, and a ceiling that gets a little worse with each intervention. In a hospital ward or a hotel corridor the disruption alone can be more expensive than the repair.

Sizing the opening to the equipment at design stage removes all of it. That is what the ZENITH+ series exists for.

There is no engineering logic behind 600 × 600 as such. It is the size at which a particular design stops working, and it has become the default because almost every manufacturer uses that design.

Conventional panels engage the shutter on a hook or flange at two corners, hold it with a push lock, and use a thin aluminium frame crimped at the corners. Each of those runs out at roughly the same point. A push lock cannot hold a heavy shutter closed. Hook engagement means a large shutter must be supported by hand while it is unhooked and lifted back, which becomes unsafe at height. And a thin crimped section cannot keep a large shutter flat, so it sags and warps.

600 × 600 is simply where all three remain comfortably within tolerance. Some manufacturers push to 1200 × 600 — beyond that, enlarging the same design produces warped shutters and a genuine safety risk.

It has also become self-reinforcing. Because 600 × 600 is what the market offers, it is what gets specified, what ceiling contractors set out for, and what consultants assume is available. The size limitation shapes the specification rather than the requirement shaping the product.

SKYHATCH ZENITH+ was built by changing the mechanism rather than stretching the panel — sliding hinge, engineered sections with built-in stiffeners, Allen cam locking, jointed frames, and anchoring to the structural soffit — which is why custom sizes to 6000 × 2400mm are practical.

Only to a point, and the limit comes from the design rather than the manufacturer. Most conventional modular panels are available at 600 × 600mm and some reach 1200 × 600mm. Beyond that, the mechanism itself runs out: a push lock cannot hold the load of a large shutter, hook or flange engagement means a large shutter has to be supported by hand while it is unhooked and lifted back, and thin crimped sections cannot keep a large shutter flat — so it sags and warps over time. Larger openings need a different mechanism, not a bigger version of the same panel. SKYHATCH ZENITH+ uses a sliding hinge and heavier engineered sections, so shutters stay engaged with the frame while sliding aside, at sizes up to 6000 × 2400mm.

Frequently Asked Questions - Ceiling Trap Door Planea

What is a ceiling trap door?

A ceiling trap door is an openable panel set into a false ceiling that gives access to the services concealed above it — HVAC units, fire pipes and valves, sprinklers, smoke detectors, electrical conduits and plumbing — without cutting or dismantling the ceiling. It consists of an outer frame fixed to the ceiling structure and one or more shutters finished in the same material as the surrounding ceiling.

There is no difference. They are two names for the same product. Ceiling trap door is the common term in India; ceiling access panel is more usual in the UK, North America and the Gulf. The same element is also called an access panel ceiling, ceiling access hatch, inspection hatch, gypsum access panel, access door or ceiling door.

Order the size the equipment needs — not the size a catalogue offers. SKYHATCH ceiling trap doors are made to any custom dimension in exact millimetres, so the opening should be decided by what has to be reached, serviced and eventually removed through it. Ask the services consultant, the design team or the equipment vendor what access the machine actually requires, and order that.

For routine access points, PLANEA covers 250 × 250mm to 1200 × 600mm, with 300 × 300, 450 × 450, 600 × 600 and 600 × 1200mm held in stock. For anything larger, ZENITH+ is made to the project dimension up to 6000 × 2400mm and larger on request, with multiple shutters that slide aside to leave the whole opening clear. There is no minimum order quantity and no standard size to design around.

Once the opening is decided, two dimensions matter and they are not the same number. A is the clear opening size — what you see in the finished ceiling, edged by the shadow groove. B is the framing size — the internal dimension of the ceiling framing, which is larger because the ceiling board overlaps the outer flange of the trap door.

Once the opening is decided, two dimensions matter. A is the visible opening — the shutter size, from the inside of the outer frame to the inside of the outer frame. B is the outer-to-outer size of the complete frame. B = A + 29 + 29 for PLANEA, and B = A + 26.8 + 26.8 for ZENITH+. A 600 × 600mm PLANEA opening therefore has an outer frame size of 658 × 658mm.

For a new gypsum board ceiling, order A. For a POP ceiling, order B: the opening left in the POP, with the wire mesh protruding into it, is equal to B. If the sub-frame is already tied, ordering B keeps things simple.

A is the visible opening in the finished ceiling, edged by the 2–3mm shadow groove — the shutter size. B is the outer-to-outer size of the trap door frame, which is where the sub-frame is set out. In a gypsum ceiling the board runs over the flange from B to A. Specify A for new ceilings; give B for POP ceilings or where the framing already exists.

Choose PLANEA (CTD26) for standard openings up to 1200 × 600mm where the access point is routine and stock availability matters. Choose ZENITH+ (CTD25) when the opening is set by equipment rather than convention, when it exceeds 1200 × 600mm, when you need multiple shutters sliding aside for a fully clear opening, or when the panel must be anchored to the structural soffit independently of the ceiling grid.

ZENITH+ (CTD25) is made to any custom size up to 6000 × 2400mm, and larger on request. The largest delivered to date is 18 feet by 8 feet. Above single-shutter width the panel becomes a multi-shutter assembly, with every shutter sliding to one or both sides to leave the full opening clear.

Any 10–12mm material: MR gypsum board, prelaminated particle board, WPC or PVC board, ACP, laminate, veneer on base board, calcium silicate board, honeycomb lightweight panels, or other decorative material. The infill is finished on site to match the surrounding ceiling, which is what makes the panel visually disappear.

No, and it is worth understanding why. SKYHATCH is an architectural ceiling access system whose shutter carries the same finish material as the ceiling around it. Aluminium is non-combustible — Euroclass A1 for reaction to fire — but SKYHATCH is not a fire-resistance-rated assembly and IQUBX makes no such claim. Where a project requires a rated assembly for compartmentation, the correct product is a fire-rated steel hatch in a fixed size, which is a different product class. Non-fire-rated is the norm across the premium seamless-finish ceiling access category internationally.

SKYHATCH is certified GreenPro Ecolabel Type 1 by the Products & Services Council of the CII — a third-party verified, multi-criteria, life-cycle assessment rather than a self-declared claim. It contributes to LEED, IGBC, GRIHA, WELL, BREEAM, Green Star, Estidama and GSAS submissions, and to corporate sustainability and net-zero reporting, earning credits under the Materials and Resources section of IGBC ratings.

PLANEA fixes to the sub-frame of the false ceiling with screws. ZENITH+ is anchored to the true ceiling soffit — the RCC slab or roof structure — using GI strips, butterfly hangers or MS threaded rods, so the weight of a large trap door is carried by the structure rather than by the false ceiling framing. Loading ceiling framing with a large trap door leads to deterioration and, in the worst case, accidents.

Yes. SKYHATCH can be installed into an existing opening, including in place of an old wooden trap door. Measure the existing opening and order by B, the outer frame size. Because frames are jointed rather than crimped, a unit can also be resized after fabrication.

Only a 2–3mm shadow groove is visible at the shutter and frame joint. There is no visible flange and, with PLANEA’s push lock, no visible keyhole. Once the infill is finished to match the ceiling, the panel blends seamlessly with the ceiling.

No. IQUBX supplies from a single unit upwards, pan-India and for export.

PLANEA standard sizes are stocked and available through IQUBX, through distributors and online. ZENITH+ is made to order — share the gypsum opening size, ceiling finish and quantity for a quotation. IQUBX distributors operate across India, the Middle East and Nepal. PLANEA standard sizes are also on Amazon India.

Because the shutter never has to be detached from the frame.

Conventional ceiling access panels use temporary hook or flange engagement at two corners. To open one, the shutter has to be supported by hand, unhooked, carried down and set aside, then lifted back and re-engaged afterwards — usually by one maintenance worker, at height, on a ladder. It can slip on the way down and it can fall while being re-hung. At small sizes this is manageable. At large sizes it is a genuine safety risk.

The SKYHATCH sliding hinge works differently. The shutter stays engaged with the outer frame throughout, sliding aside rather than coming off, and is held additionally by a stainless steel safety wire. Nothing is carried down a ladder and nothing can be dropped. The shutter can still be removed deliberately for any reason if required – like  full access above the ceiling, realignment of shutters or frames or even during installation of bigger size access panels.

Three further things follow from the same design. Large shutters can be locked properly — with an Allen cam lock built for the load — rather than relying on a push lock that cannot hold a heavy shutter closed. Heavier engineered sections with built-in stiffeners keep shutters flat, so they do not sag or warp and stop seating correctly over time. And on large ZENITH+ assemblies the frame is anchored to the RCC soffit or roof structure, so the weight goes to the slab and never loads the false ceiling — which is what prevents the ceiling deterioration and collapse risk that comes from hanging a large trap door off ceiling framing.

Because the design almost every manufacturer uses cannot be scaled up. The limit is the mechanism, not manufacturing capacity.

Conventional modular panels share the same basic construction worldwide: a thin aluminium frame crimped at the corners, a shutter engaged on a hook or extended flange at two corners, and a push lock holding it closed. At 600 × 600mm this works well. Enlarged, each element fails for a different reason.

A push lock is a light mechanism and cannot hold the load of a large shutter closed. Hook engagement is temporary by design, so a large shutter has to be supported by hand while it is unhooked, carried down and lifted back — awkward and unsafe at height. And a thin crimped section has no capacity to keep a large shutter flat, so it sags and warps over time until it no longer seats properly. Crimping also means the frame cannot be opened, resized or adapted once made.

So most modular panels are offered at 600 × 600mm, some reach 1200 × 600mm, and beyond that the market effectively stops. Faced with a large opening, the profession improvises — a wooden trap door fabricated on site that deteriorates within a year or two, or several small panels in a row that clutter the ceiling and still leave crossbars across the opening.

Solving it required changing the mechanism rather than enlarging the panel. SKYHATCH ZENITH+ uses a sliding hinge, so shutters stay engaged with the frame while sliding aside; heavier engineered sections with built-in stiffeners, so shutters stay flat; Allen cam locking built for the load; jointed rather than crimped frames; and anchoring to the RCC soffit, so the weight goes to the structure and not to the false ceiling. That combination makes custom sizes up to 6000 × 2400mm practical, and larger on request.

Because the size of the opening is decided by the equipment above the ceiling, not by convention.

An air handling unit, a chilled water fan coil unit, a ductable indoor unit, a pump or a valve assembly has to be reached for routine service, opened up for repair, and eventually removed and replaced entirely. Replacement is the demanding case: a machine has to physically pass through the opening, along with the people and tools handling it. A 600 × 600mm panel serves an inspection. It does not serve an equipment change.

The same applies to service zones rather than single machines. Above a hospital corridor, an airport terminal or an office floor plate, the plenum carries ducting, fire pipes, sprinklers, cabling and plumbing in parallel runs. Reaching a length of that requires a long opening, not a series of portholes.

Large format access also protects the ceiling itself. Where the opening is undersized, maintenance teams cut the ceiling open, and the board and plaster are patched afterwards — repeatedly, over the building’s life, with visible deterioration and cost every time.

The requirement has always existed. What has not existed is a product that meets it, which is why so many projects settle for a compromise that is paid for over the next twenty years.

Mostly, they are not.

A 600 × 600mm panel allows a technician to put an arm and a head through it. That is adequate for inspecting a valve, checking a detector, or reaching a junction box. It is not adequate for working on a machine.

What happens in practice is one of three things. The technician works blind through an opening too small to see or reach properly, which makes the job slower and the work poorer. Or several small panels are opened at once and the work is done in pieces around the crossbars between them. Or — most commonly, when the machine has to come out — the ceiling is cut open, and the board and plaster are repaired and repainted afterwards.

That third outcome is the real cost of undersized access: delay, extended downtime, dust and disruption in occupied space, and a ceiling that gets a little worse with each intervention. In a hospital ward or a hotel corridor the disruption alone can be more expensive than the repair.

Sizing the opening to the equipment at design stage removes all of it. That is what the ZENITH+ series exists for.

There is no engineering logic behind 600 × 600 as such. It is the size at which a particular design stops working, and it has become the default because almost every manufacturer uses that design.

Conventional panels engage the shutter on a hook or flange at two corners, hold it with a push lock, and use a thin aluminium frame crimped at the corners. Each of those runs out at roughly the same point. A push lock cannot hold a heavy shutter closed. Hook engagement means a large shutter must be supported by hand while it is unhooked and lifted back, which becomes unsafe at height. And a thin crimped section cannot keep a large shutter flat, so it sags and warps.

600 × 600 is simply where all three remain comfortably within tolerance. Some manufacturers push to 1200 × 600 — beyond that, enlarging the same design produces warped shutters and a genuine safety risk.

It has also become self-reinforcing. Because 600 × 600 is what the market offers, it is what gets specified, what ceiling contractors set out for, and what consultants assume is available. The size limitation shapes the specification rather than the requirement shaping the product.

SKYHATCH ZENITH+ was built by changing the mechanism rather than stretching the panel — sliding hinge, engineered sections with built-in stiffeners, Allen cam locking, jointed frames, and anchoring to the structural soffit — which is why custom sizes to 6000 × 2400mm are practical.

Only to a point, and the limit comes from the design rather than the manufacturer. Most conventional modular panels are available at 600 × 600mm and some reach 1200 × 600mm. Beyond that, the mechanism itself runs out: a push lock cannot hold the load of a large shutter, hook or flange engagement means a large shutter has to be supported by hand while it is unhooked and lifted back, and thin crimped sections cannot keep a large shutter flat — so it sags and warps over time. Larger openings need a different mechanism, not a bigger version of the same panel. SKYHATCH ZENITH+ uses a sliding hinge and heavier engineered sections, so shutters stay engaged with the frame while sliding aside, at sizes up to 6000 × 2400mm.

Frequently Asked Questions - Ceiling Trap Door Zenith+

What does multi-shutter mean?

Above a single shutter width, a ZENITH+ trap door is built as several shutters across the opening rather than one large panel. Each shutter runs on the proprietary sliding hinge and slides to one side or to both, so the full designated opening is left clear. There is no crossbar and no partial access. The number of shutters is configured to the size of the opening.

No. They slide aside and stay engaged with the outer frame, and each is additionally held by a stainless steel safety wire. That means no large shutter has to be carried down a ladder and set down during maintenance. They can still be removed deliberately when there is a need to service the trap door itself.

The outer frame is anchored to the true ceiling soffit — the RCC slab or the structural members of the roof — using GI strips, butterfly hangers or MS threaded rods, with support from two or more main framing sections. The false ceiling carries none of the load. Hanging a large trap door from ceiling framing overloads a system never designed for it, which leads to deterioration and, in the worst case, accidents.

No. The outer and inner profiles carry built-in stiffeners, and on larger shutters aluminium tubes of approximately 20 × 50mm are screwed to the inner profile to stiffen the shutter across its span. With heavy-weight 6063 T6 sections, the shutters stay flat at any size in the range.

WPC or PVC board is the standard choice on large shutters, specifically to keep the weight down. Any 10–12mm material can be used — MR gypsum board, prelaminated particle board, ACP, laminate, veneer, honeycomb lightweight panels — customised to match the ceiling finish, with weight taken into account as the shutter gets bigger.

With an Allen cam lock of IQUBX make: a 6063 T6 aluminium lock body and barrel, a cam lever and a steel fastener assembly, built for high-load and repeated-use applications, operated with an Allen hex key and finished with an aluminium cover collar. Larger assemblies use more than one lock.

6000 × 2400mm as standard maximum, and larger on request. The largest delivered to date is 18 feet by 8 feet. Beyond that, the limiting factors are transport, site access and handling rather than the system itself.

Yes – that is the point of the series. Every unit is customized to any size in exact millimetre requirement. There are no standard sizes; the opening dictates the product.

The outer frame sits approximately 26mm above the ceiling board, and the sliding shutters need about 75mm clear above the frame — approximately 100mm above the finished ceiling line — to move aside. Where the plenum is tight or services run immediately above the opening, send the plenum depth with your enquiry so the configuration can be checked.

Yes. The infill material can be replaced without replacing the system, so a ceiling that is refinished later does not require a new trap door. The frame is also easy to maintain and repair on site, and the whole assembly can be reused or relocated.

Yes. IQUBX exports, with distributors across India, the Middle East and Nepal, and supplies internationally on enquiry. The system is designed and made in India.

It depends on the size and the site. As a guide: four for a 2’6″ × 5′ unit, six for 8′ × 4′, eight for 8′ × 6′, and ten to twelve for 12′ × 8′, spaced about 1200mm apart and never more than 1500mm. 6mm MS threaded rods are standard. Where equipment above the ceiling blocks a position, brackets can be moved or added.

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