UL Standard 3-hour Hollow Metal Door Series

- Nov 04, 2020-

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;

3 hours fire rated hollow metal door series