In order to meet the requirements of customers who require high-quality hollow metal doors, we have launched the UL standard 3-hour hollow metal door series.
This series meets the strict standards outlined in the NFPA and ASTM test standards, and has passed the UL10(B)&UL10(C) test. The thickness of the door is 1¾ inches (45mm), and it can be made of 16, 18 and 20 galvanized steel.
General specifications:
The facade is flush without any seams, welds.
Various frame types are suitable for dry wall and masonry wall
Provide door hinge reinforcements and other hardware reinforcements
Free hardware opening service
Surface spray color is optional
Here are some pictures of our new series as follow;
