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Product Description
B-15 Class Double leaf Fireproof Door
Product Introduction:
The B-15 Class Double Leaf Fireproof Door is a versatile marine interior fire door designed to meet SOLAS (Safety of Life at Sea) and IMO (International Maritime Organization) requirements for B‑class divisions. Featuring a double leaf configuration and certified B‑15 fire protection, this door is specifically engineered for wider bulkhead openings in accommodation areas, corridors, and public spaces where both fire safety and ample access width are essential.
Product parameters:
| Door leaf | PVC laminated/powder coated steel sheet |
| Door frame | Steel plate |
| Powder coated | |
| Stainless steel door sill cover plate | |
| Max clear open size | 2000×2200 |
| Cutting size | 2100×As Required |
| Size of door | 2100×As Required |
| Open direction | LO/RO/LI/RI |
| Door leaf thick | 40mm |
| Sound reduction value(db) | 30dB |
| Sill | √ |
| Optional fitings | Ventilation louver,kick-out panel ,Square or round window |
Key Features:
*B-15 Fire Rating – Certified to prevent flame passage for 15 minutes and limit temperature rise on the unexposed side in accordance with IMO FTP Code Part 3, suitable for B‑class bulkhead installations.
*Double Leaf Configuration – Features two independently operating leaves, providing a wider passageway for equipment movement, stretcher access, furniture relocation, or higher personnel traffic while maintaining full fire integrity.
*Space-Efficient Design – When fully opened, the double leaves create a wide clearance; when closed, the door occupies minimal corridor space compared to a wider single leaf door.
*Lightweight Construction – Fabricated with thin-gauge steel skins and a non-combustible mineral fibre or composite insulation core, reducing weight without compromising fire integrity.
*Self-Closing Mechanism – Both leaves are equipped with automatic closing devices to ensure the door closes securely in the event of fire or emergency, complying with SOLAS Chapter II‑2 requirements.
*Meeting Stile Protection – The vertical meeting stile (where the two leaves close together) is fitted with intumescent seals and optional overlapping astragal to block smoke and flame passage.
*Durable Finish – Finished with marine-grade paint, PVC laminate, or decorative veneer options to match interior cabin and corridor aesthetics while resisting wear, humidity, and cleaning agents.
*Reliable Hardware – Stainless steel hinges, latches, handles, and flush bolts (for the inactive leaf) designed for frequent daily use. Optional coordinator mechanisms ensure proper leaf sequencing.
Typical Applications:
*Wide corridor bulkhead openings on passenger ships and ferries.
*Public space entrances (lounges, dining rooms, recreation areas).
*Hospital and medical bay doors on marine vessels.
*Offshore platform common areas and accommodation modules.
*Naval vessel wide passageways and equipment rooms.
*Cargo ship alleyways requiring wider access.
Why Choose the Double Leaf Version?
While single leaf B-15 doors suit standard cabin openings, the double leaf configuration offers distinct advantages for wider bulkheads:
*Wider access – Accommodates stretchers, wheelchairs, trolleys, and furniture movement
*Operational flexibility – Daily use of one active leaf while keeping the second leaf secured; both open fully for large passages
*Reduced swing space – Two narrower leaves require less clearance area than one very wide single leaf door
*Same B‑15 protection – No compromise on fire safety despite larger dimensions
*Aesthetic balance – Symmetrical double leaves often suit wider corridors and public spaces better than an oversized single leaf
For marine architects, shipyards, and vessel operators who require wide, safe access points on B‑class bulkheads, this double leaf fireproof door delivers reliable performance without sacrificing fire integrity.
