Steel Primary-Secondary Door

EMT primary-secondary doors have large leaf width of 700-900mm and small leaf width of 300-500mm, with total opening width up to 1000-1400mm. Both frame and leaves use 1.2mm cold-rolled steel with flame-retardant rock wool. The large leaf has standard clean door hardware; the small leaf has concealed bolt fixtures, normally locked to the frame. When both leaves are closed, sealing strips and overlap structures form reliable airtight seals. Electrostatic powder coating with customizable colors. Optional observation windows and access control. Primary-secondary doors are the most common double doors in cleanrooms, widely used in equipment rooms, material passages, and corridors.