... thickness:2MM,Door thickness:6MM,Inner box thickness:0.8MM 3.Mechanical key:hi Safe Deposit Locker JC-33 ALL-STEEL PLATE ... ,Door thickness:6MM,Inner box thickness:0.8MM3.Mechanical key:high-precision dual-key locks (UL approval)4.Color:Ivory ,black,darkgray ... ,... Big Door Size:W370*H220(Amount 3)Middle Door Size: W370 ...