1) Inside: stainless steel a) Thickness: 0.7mm b) U type reinforced ribbons c) Sound-insulated warmth resistance honey comb paper 2) Outside: HDF board veneered with natural wood skin a) Thickness: 8mm b) Door surface: Studded Cover / Smooth c) Door seal: Sound-insulated rubber seal d) Door sill: Stainless steel e) Filling: Sound-insulated warmth resistance honey comb paper 7) Door frame: a) Inside: stainless steel b) Outside: HDF c) Decorative wood line d) Strong plate (for installation of expanding bolt) e) Fixation pin 8) Accessory: a) Quality core-inserted security lock b) Strong hinge (visible/invisible) c) Wide vision peephole d) Handle e) Sides lock points 9) Standard size: Wall to Wall size (H x W): 2100*900/1000mm Door thickness: 75mm/90mm Other sizes also acceptable up to customer's requests