If there is a fire, the high temperature resistance of the fireproof door lock can also help to delay the fire and extend the evacuation time.

https://ztfiredoor.com/20339.html

fireproof attic door,fire rated attic ladder,fire rated attic access,fire rated attic door,fire separation door,fireproof attic door,fire rated cupboard doors,fire rated attic ladder,fire rated sliding doors,fire rated attic door,fireproof sliding door,fireproof attic door,fire proof sliding doors,fire rated attic ladder,fire rated sliding door residential,fire rated attic door