B15 Fire Door: It is a sort of B-fire rated door.It is a partially insulated door.It means that this door can prevent fire spreading in 0.5 hour,but it can not be hast-insulated more than half an hour.This door is suitable for ships/boats where moderate or light fire control is required.Excepting B15 fire door,we can also provide the B0 fire door. Specification of B15 fire door: - Door leaf: PVC-Laminated galvanized sheet or steel sheet with baked paint. - Door frame: Steel sheet baked paint. - With window. - Stuffing: Fireproof material. - Lock handle position: on lefton right. - Including: lock, handle, rubber sealing, door closer and ect.