Wooden door frame of 115mmx70mm section with heat activated in tumescent fire seal strip of size 15 into 3mm and one coat of anti-termite fire retardant primer.
Door shutter : 50 mm thick asbestos
Free composite fire /smoke check shutter of 60 minutes fire resistant rating confirming to BS: 476% part -22, ISO : & IS :3614 part-II comprising of two 6mm thick calcium silicate boards, a 100% without asbestos, brucite and meerschaum, having density not less than
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