The fire door uses a push-rod door lock, so that the fire door can be opened only by pushing with the hand or the body, so as to avoid burns due to the high temperature of the door handle in the event of a fire.

https://ztfiredoor.com/20178.html

marine rated fire door mortise,fire rated metal door,fire rated automatic sliding doors,fire metal door,fire-rated metal door,marine rated fire door mortise,fire rate door with ul,fire rated automatic sliding doors,fire rated classroom door,marine rated fire door mortise,fire proof hotel door,fire-rated metal door,fire door,fire rated automatic sliding doors,fire aluminium door,fire-rated metal door