ECLISSE 40 from ECLISSE is a door frame for the hinged door that is flush on one side and splayed on the other. 40 degrees of incline on one side, 0 mm of thickness on the other side. On one side ...
The door itself, or the frame, could also expand after exposure ... Fire doors must have specific fire door hardware, according to the NFPA: Section 4.6.4.3 specifically states that "fire door ...