Fire Resistance Door AutoCAD Drawing with Isometric Mechanism Detail

This fire resistance door AutoCAD drawing file provides a comprehensive layout with detailed elevation, sectional, and isometric views of a fire-rated door system. The drawing includes precise dimensions of the door panel, frame structure, and internal construction layers designed for fire safety performance. It also features an isometric view of the operating mechanism, including motor assembly, gear system, and chain drive installed at the upper section of the door.