Fire Rated Sliding Doors

Cronax Fire Rated Sliding Doors are engineered to provide maximum protection in the event of a fire while ensuring smooth, space-efficient operation. Designed for industrial, commercial, and institutional facilities, these doors act as a critical barrier against the spread of flames, smoke, and heat. Manufactured from heavy-duty steel panels, the doors are internally filled with high-performance fire-resistant materials such as mineral wool, rockwool, ceramic-based boards, or honeycomb cores.

This advanced construction provides excellent insulation and integrity, with fire ratings of up to 240 minutes, ensuring compliance with national and international safety standards. Their sliding mechanism makes them ideal for areas with limited headroom or where wide openings are required, such as warehouses, factories, pharmaceutical units, or large commercial complexes. The robust track and guide system ensures smooth and reliable operation, even under frequent use.

ENGINEERING HIGHLIGHTS
SMART CONTROL SYSTEM
CUSTOMIZATION OPTIONS

Door Type	Fire-rated sliding doors engineered for large openings, combining space-saving design with robust compartmentation against fire and smoke.
Primary Application	Warehouses, corridors, industrial facilities, flight hangars, and buildings with limited headroom but requiring fire-safe sliding separation.
Fire Rating	Certified for up to 240 minutes (4 hours) of fire resistance, delivering superior protection for critical areas.
Maximum Clear Opening	Single leaf up to 6,000 mm wide × 8,000 mm high; double leaf systems up to 12,000 mm wide × 8,000 mm high.
Leaf Construction	Approximately 83 mm thick panels, steel- or plywood-faced, filled with high-density fire-resistant materials.
Operation Principle	Door remains normally open; closes automatically during fire via fusible link or electromagnet triggering counterweight system.
Track & Mounting	Monorail steel track anchored overhead; panels roll on dual-wall bearings for reliable, smooth operation.
Compliance & Standards	Tested to BS 476-20 and BS 476-22 standards for fire integrity and insulation.

Drive System	Primarily passive: counterweight mechanism with fusible link or electromagnetic release keeps door open, closing under fire activation.
Enabling Devices	Optional integration with smoke detectors or fire alarm systems to trigger automated closure.
User Controls	Manual operation for opening as required; labeled handles for push/pull access.
Safety Systems	Fusible link or electromagnetic hold-open reliably deploys closure during elevated temperatures or fire alarm activation.
Emergency & Backup	No external power required; door closes via gravity and counterweight in emergencies.
Integration	Fully compatible with Building Management Systems (BMS), fire alarm circuits, and emergency communication systems.

Finish Options	Standard finish: RAL-matched paint on steel or plywood face; optional stainless steel or premium laminates available.
Infill Core Options	High-density mineral wool, rockwool, ceramic board, glasswool, honeycomb—enabling fire resistance up to 240 minutes per your standard.
Sealing Packages	Bottom and vertical edge seals with fire-rated gaskets to maintain compartment integrity during fire events.
Branding	Custom paint and laser-printed logos available without impacting fire certification.
Accessories	Optional vision panels, warning lights, powder-coated frames, and smart position monitoring systems.