... .Light steel structure, sturdiness and durability, fire protection, thermal insulation and flexible handling2.Convenient to transport, easy to assemble and ... made of 0.7 mm steel, 90mm thick rock wool insulation foam.10Inside doorSIP, single door with dimensions of 750*2000mm, ... with 3keys. Doorframe is made of aluminum, 50mm thick EPS insulation foam.11Window(W-1)PVC, white color, with dimensions of ...