Twinpro Fire-rated doors are constructed from 1.0mm thick galvanized steel sheet, formed to provide a 48mm-thick fully flush, double-skin door shell with seamless welding joints all around. The internal construction of the door is specially designed with honeycomb structure coupled with reinforcement all around for the better rating. The design and internal construction varies with the degree of fire rating for various tested conditions.
Fire Rated Vision Glass with 6mm thick clear glass can be provided for a maximum of 2 hours fire rating. Rectangular vision glass of 200 x 300mm is standard. Sizes as per customers specifications can also be provided. A large variety of Door Closers can be fitted. Door frames and door shutters are Zinc-Phosphated and finished with UV resistant, pure polyester powder coating.