This type of door and frame assembly is
designed to support the high weight resulting from shielding
materials located in the core of the door.
Construction A-36 steel with at least Ό and 3/8
thick faces, and heavy duty rails and stiles that are
manufactured from Ύ tick A-36 steel.
Hinges Precision machined, anti-friction needle
roller bearings and are matched to at least twice the weight
of the door. One pair of hinges is supplied per door
Designed for ease of installation, durability, and
reliability. Each operator is matched to the doors physical
dimensions and weight.
ASTM B29 LEAD and 5% borated Polyethylene, as designated by
the physicist and architectural specifications.