Fire doors of comprehensive commercial buildings shall be equipped with Class A normally open fire doors at the fire compartment in the evacuation aisle. Normally open fire doors shall be able to close automatically in case of fire and have the function of signal feedback.

https://ztfiredoor.com/13664.html

12×12 fire rated access panel,oversized fire doors,heavy duty fire door,fire rated double doors,300×300 fire rated access panel,12×12 fire rated access panel,garage door to house fire rated,oversized fire doors,90 minute fire rated interior doors,fire rated double doors,single panel fire door,12×12 fire rated access panel,fireproof interior garage doors,oversized fire doors,fire rated apartment doors,fire rated double doors