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Fire Rated Steel Doors

Engineered to Stop Fire in Its Tracks

Kosavi fire rated steel doors are designed for compartmentation, protected escape routes, and code-compliant fire safety — built for projects where failure is not an option.

30 / 60 / 90 / 120 Min IS 3614:2021 Compliant Intumescent Sealed
Kosavi Fire Rated Exit Door
Door Types

Fire Door Applications

Four primary configurations — each engineered for its specific installation environment and fire safety requirement.

Fire Exit Door

Fire Exit Doors

Single and double leaf fire exit doors for staircases, lobbies, and escape routes. Panic bar hardware compatible.

  • 30 / 60 / 90 min rating
  • Single & double leaf
  • Panic bar ready
Fire Shaft Door

Shaft & Duct Doors

Fire rated access doors for service shafts, electrical risers, and utility zones. Maintains fire compartmentation in vertical service runs.

  • 60 / 120 min rating
  • Flush & semi-recessed
  • Access panel compatible
Staircase Fire Door

Staircase Doors

Staircase enclosure doors protecting fire-protected escape routes in multi-storey buildings. Self-closing mechanism standard.

  • 60 / 90 min rating
  • Self-closing hardware
  • Smoke seal standard
Basement Fire Door

Basement & Utility Doors

Fire rated doors for basement access, electrical rooms, and service areas where regulated compartmentation is mandated.

  • 60 / 90 / 120 min rating
  • Heavy duty construction
  • Custom sizing available
Technical Specifications

What's Inside Every Door

Every Kosavi fire rated door is manufactured to a defined technical standard. The specifications below reflect our standard production range — custom configurations available on project enquiry.

Compliance & Standards
IS 3614:2021 BS 476 Part 22 NBC 2016 CE Marked Components NABL Accreditation BFRC NIE Tested
Request Full Spec Sheet
Door Leaf Skin 1.2 mm – 0.8 mm GPSP steel (both faces)
Core Material Mineral wool / rock wool insulation (fire rated)  |  Honeycomb (uninsulated)
Door Leaf Thickness 46 mm standard
Frame Material 1.2 mm – 1.6 mm GPSP steel
Frame Profile 100 mm × 58 mm standard  |  custom profiles on request
Fire Rating 120 min NABL Approved LAB
Smoke Resistance Intumescent + Smoke seals, 3-sided
Intumescent Seals Intumescent seals on door edge and frame rebate (standard)
Vision Panel 5 mm Fire Rated Pyron glass
Max Single Leaf Size 1,200 mm (W) × 2,400 mm (H)
Max Double Leaf Size 2,400 mm (W) × 2,400 mm (H)
Opening Direction Inward / Outward  |  Single or double action
Standard Hardware SS butt hinges, overhead door closer, Panic Bar + Trim
Optional Hardware Lever handle Lock
Surface Finish Powder coated (standard)
Acoustic Performance Up to 32 dB (special specification)
Custom Sizing Available on project order  |  Lead time 4–6 weeks
Hardware Components

Specified Hardware. Every Time.

Fire door hardware is not an afterthought — it's part of the rated assembly. All hardware is selected and fitted to maintain the fire integrity of the door set.

Door Closer

Overhead Door Closer

EN 1–6 rated overhead closer. Ensures controlled self-closing action — mandatory for fire doors in escape routes.

Steel Hinges

Steel Butt Hinges

Stainless steel or steel butt hinges, fire rated. Minimum 3 hinges per leaf. Load-rated for heavy steel door weight.

Panic Bar

Panic Bar (Touch Bar)

Single-action panic release bar for emergency egress compliance. EN 1125 rated. Essential for public escape routes.

Box-type Panic Bar

Box-Type Panic Bar

Recessed box-type panic device for double-leaf installations. Provides coordinated release with rebate and weather seal.

External Trim

External Trim & Pull Handle

Stainless steel external lever or pull handle trim. Compatible with single-point and multi-point locking systems.

Fire Rated Glass

Fire Rated Glass

5 mm ceramic fire-rated glass or wired glass vision panel. Maintains fire compartmentation while providing sightlines.

Specifying Fire Rated Doors?

Contact Kosavi for product details, configuration options, compliance documentation, and project quotation support.