... .Insulated door 1. Steel-wood door with the view hole2.Std.Dimension:900X2100mm3.Door leaf thickness options:50mm, 70mm, 90mm4.Steel frame thickness:1.2mm5.Steel door board ... : non-insulated, insulated9.Surface disposal options: zinc galvanized, coating10.Exterior door, entrance door11.Safe, burglar proof, multi-point locking system12.Good ...