Specialty doors
Our door brands
Specialty doors on this page sit with MetaDoor. Fire rated doors sit with BÖLDT.
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MetaDoor
Acoustic, clean room, blast and bullet resistant, sliding, bi-folding, louvred and wood finish steel doors.
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BÖLDT
Fire rated, glazed, shaft and HMPS doors, plus fire and smoke curtains.
boldt.co.in (opens brand site)
Start with what the door must stop
Each door in the range answers one problem at the opening. Find the problem, then the door.
- Sound
Acoustic doors STC 35 to 55
- Particles and pressure
Cleanroom doors ISO 5 to 8
- Stale air
Louvred doors 30 to 50 percent free area
- A pressure wave
Blast resistant doors up to 15 PSI
- Gunfire
Bullet resistant doors BR1 to BR7
- A wide span
Sliding and bi-folding doors up to 6000mm and 12000mm
- A plain steel look
Wood finish steel doors 20+ grain patterns
- Flame and smoke
Fire rated, glazed, shaft and HMPS doors on our Fire safety page
Rooms that control what passes
Acoustic, clean room and louvred doors manage sound, particles and air between rooms, each set to the room it closes.
Acoustic doors
Built to cut the sound that travels from one room into the next, for recording studios, hospitals, hotels and conference rooms. A heavy steel leaf carries a multi-layer acoustic core and closes onto an automatic drop seal, and fire-rated versions are available for rooms that need both.
- Sound
- STC 35, 45, 50 or 55
- Core
- Multi-layer acoustic insulation
- Finish
- Powder coat or wood veneer
Cleanroom doors
For sterile suites in pharmaceutical, healthcare and semiconductor projects that have to hold their room class. Hermetically sealed, with smooth non-porous faces that wipe down easily and antimicrobial coating options. The leaf comes in stainless steel or a powder coat, opens by hand or automatically, and is pressure-resistant and suits airlock systems.
- Room class
- ISO 5 to 8
- Seal
- Magnetic or compression type
- Leaf
- Stainless steel or powder coat
Louvred doors
Integrated louvres keep air moving through equipment rooms and mechanical spaces that need ventilation all day. Fixed or adjustable blades come in custom patterns, in corrosion-resistant galvanized steel or aluminum with a powder coated finish.
- Free area
- 30 to 50 percent
- Blades
- Fixed or adjustable
- Rating
- Non-rated or 60 minutes
Doors that hold against force
Blast and bullet resistant doors guard high-risk sites, and both can pair fire protection with their own rating.
Blast resistant doors
Engineered to withstand explosion pressure waves at petrochemical facilities, military installations and other high-risk areas. Reinforced steel hangs in a continuously welded frame on blast-resistant hardware, combines fire and blast protection, stays emergency egress compliant, and runs manual or automatic.
- Blast
- Up to 15 PSI overpressure
- Test standards
- GSA, DOD, ASTM
- Frame
- Continuously welded
Bullet resistant doors
For banks, embassies, government and security sites where a door has to stop ballistic threats. A composite ballistic core is concealed inside the steel leaf, hung in heavy-duty frames with heavy-duty hardware, and combined fire and ballistic protection is available in a powder coated or custom finish.
- Ballistic
- BR1 to BR7
- Test standards
- EN 1522 and EN 1523
- Core
- Concealed composite
Wide spans and warm finishes
Sliding and bi-folding doors clear the widest openings in the range, and wood finish steel doors bring a timber look to steel.
Sliding doors
A sliding leaf gives back the floor a swing door needs, for industrial and commercial openings. Top-hung or bottom-rolling heavy-duty tracks carry steel or stainless steel leaves, moved by hand or by motor. Built non-rated, or fire rated at 60, 90 or 120 minutes.
- Width
- Up to 6000mm
- Track
- Top-hung or bottom-rolling
- Drive
- Manual or motorized
Bi-folding doors
Panels fold back on a compact mechanism to clear the widest openings while taking up little room, for hangars, warehouses and large openings. Steel or aluminum, powder coated or anodized, manual or electric, with weather-sealed options for openings that face the outside.
- Opening
- Up to 12000mm
- Panels
- Two, three or four
- Drive
- Manual or electric
Wood finish steel doors
The warmth of wood grain on the strength of galvanized steel, for homes and commercial interiors. A sublimation grain finish covers a honeycomb or mineral wool core in a deep steel frame. Termite and rot resistant, low maintenance, and optionally fire rated at 60, 90 or 120 minutes.
- Grain
- 20+ patterns
- Frame depth
- 100mm to 150mm
- Rating
- Optional 60, 90, 120 minutes
Built in, then configured
In every leaf
- Vertical stiffeners and a heavy-duty steel skin for impact resistance on high-traffic sites.
- A pre-assembled frame and leaf system that cuts site labour and keeps the leaf aligned.
- Integrated smoke and acoustic seals, tested to ISO standards for air permeability.
Chosen per door
- Over 200 RAL colours or wood finishes.
- Vision panels in configurable sizes, with fire-rated glass options.
- Panic bars, handles and access controls, plus kick plates, drop seals and closers.
Questions
Which of these doors can also be fire rated?
Sliding doors at 60, 90 or 120 minutes, louvred doors at 60 minutes and wood finish steel doors optionally at 60, 90 or 120 minutes. Acoustic doors come in fire-rated versions, and bullet and blast resistant doors combine fire protection with their own rating. Dedicated fire doors are on our Fire safety page.
How quiet is an acoustic door?
They are offered at STC 35, 45, 50 and 55; the leaf holds a multi-layer acoustic core and closes onto an automatic drop seal.
How wide can a door open?
Sliding doors run up to 6000mm wide on top-hung or bottom-rolling tracks. Bi-folding doors in two, three or four panels clear openings up to 12000mm.
Can colours and hardware be chosen per door?
Yes. Over 200 RAL colours or wood finishes, vision panels with fire-rated glass options, panic bars, handles and access controls, and kick plates, drop seals and closers.
How are the doors checked before they reach site?
Every door is inspected against its specification in Jaipur before dispatch, travels with the documentation for its rating, and is delivered to projects across India.
Send us the door schedule
Share the schedule of quantities or the openings, and our team in Jaipur will match each one to the right door.
The doors are made in Jaipur, where our Mahindra World City site covers 8 acres and employs 200+ people across five divisions; Window Techs has delivered projects in India and abroad since 1993.
Send us the project +91 99588 03531 info@windowtechs.in
Fire rated doors: Fire safety solutions
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