VEVOR Through The Wall Drop Box Heavy Duty Steel Through the Wall Mailbox with 2.8-7.9" 13" Combination Lock 12.5x6.3x16.9" Mail Drop Box Black Rainproof Flap Spacious Slot Heavy-Duty Steel Construction Compatible with Various Wall Types Easy Installation Versatile Utility Input ...VEVOR Through The Wall Drop Box Heavy Duty Steel Through the Wall Mailbox with 2.8-7.9" 13" Combination Lock 12.5x6.3x16.9" Mail Drop Box Black Rainproof Flap Spacious Slot Heavy-Duty Steel Construction Compatible with Various Wall Types Easy Installation Versatile Utility Input Size: 9.8 × 1.6 inch/250 × 40 mm,Color: Black,Item Model Number: MA071 black,Product Weight: 6.1 kg/13.45 lbs,Wall Thickness: 2.8-7.9 inch/70-200 mm,Main Material: Heavy Duty Steel Plate,Product Size: 320 × 158 × 430 mm /12.6 × 6.22 × 16.93 inch