Qhov hluav taws kub shutter qhov rooj feem ntau yog fireproof. Thaum lub tswb hluav taws tau tshwm sim, lub qhov rooj kaw qhov rooj cia li poob los tswj qhov xwm txheej hluav taws thiab tiv thaiv kev sib kis ntawm cov nplaim taws. Cov khoom pov thawj hluav taws kub thiab cov qhov rooj tiv thaiv hluav taws yog muab rau hauv cov khw loj loj thiab cov khw muag khoom loj rau kev lag luam.