TUF Marine Aluminum Hollow Cabin Door complies with CB/T 3281-1997 standard which applies to ship cabins with Class C fire separation requirements and open doors for aluminum cabins installed on water buildings and passages. They can be classified as Single Leaf Aluminium hollow door, Aluminium hollow door with insulating wall, Aluminum hollow door with Insulation wall and emergency opening, Aluminum hollow door with Insulation wall with ventilation grid.Available IACS Certs: ABS, BV, CCS, DNV-GL, KR,LR, RINA, NK,RMRS and etc.