B-15 Class Single Leaf Fireproof Door (Without Sill)

B-15 Class Single Leaf Fireproof Door (Without Sill)

Product Introduction:

The B-15 Class Single Leaf Fireproof Door (Without Sill) is a lightweight 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 sill‑less design and certified B‑15 fire protection, this door is specifically engineered for cabin entrances, corridor bulkheads, and accommodation areas where easy access, wheelchair mobility, and trip‑hazard elimination are priorities.

Product parameters:

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.

*Sill‑Less Design (No Sill) – Eliminates the bottom threshold, providing a flush floor transition that enhances accessibility for wheelchairs, trolleys, and personnel while removing trip hazards. Ideal for modern marine interiors requiring barrier‑free movement.

*Single Leaf Configuration – Compact and space‑efficient, perfectly suited for standard cabin and stateroom openings.

*Lightweight Construction – Fabricated with a thin‑gauge steel skin and a non‑combustible mineral fibre or composite insulation core, reducing weight without compromising fire integrity.

*Self‑Closing Mechanism – Equipped with an automatic closing device to ensure the door closes securely in the event of fire or emergency, complying with SOLAS Chapter II‑2 requirements.

*Durable Finish – Finished with marine‑grade paint, PVC laminate, or decorative veneer options to match interior cabin aesthetics while resisting wear, humidity, and cleaning agents.

*Bottom Gap Management – Despite the absence of a sill, the door incorporates an intumescent bottom seal or drop‑down automatic seal that activates under heat to block smoke and flame passage.

*Reliable Hardware – Stainless steel hinges, latch, and handle designed for frequent daily use in high‑traffic cabin environments.

Typical Applications:

*Crew and passenger cabin entrances on ships and ferries

*Corridor bulkhead doors in accommodation areas

*Offshore platform living quarters

*Naval vessel staterooms

*Accessible (ADA‑compliant) marine interiors requiring wheelchair passage

*Areas where trip‑free thresholds are preferred (e.g., hospitals, senior crew quarters)

Why Choose the Sill‑Less Version?

Traditional fireproof doors often include a raised metal sill to maintain bottom fire integrity. The B‑15 Class Single Leaf Fireproof Door (Without Sill) offers distinct advantages:

*Improved accessibility – Wheelchair‑friendly and walker‑friendly passage

*Reduced trip hazards – Safer for crew and passengers, especially in low‑light conditions

*Easier cleaning – No sill to collect dirt or obstruct mopping

*Same B‑15 protection – Intumescent bottom seal ensures fire integrity without a physical sill

For marine architects and shipowners who demand fire safety without accessibility barriers, this sill‑less B‑15 door delivers the perfect balance.