1. The door frame is formed and bent at one time, with good overall rigidity and difficulty in deformation;

2. There is no solder joint structure on the surface of the door leaf, and the edges are rounded, which is beautiful and user-friendly;

3. Fireproof sealing rubber strips are set around the door frame for good sealing performance;

4. Purpose location: fan room, compressor room and other places with wind pressure and sealing requirements.

Hardware features:

Adopt three-point handwheel channel lock, three-point escape device or imported three-point handle closed lock for good locking performance.