mail box 1)material, front:casting aluminum back: inor sheet 2)secure lock with two keys mail box1)Material: front:casting aluminum back:iron sheet2)Secure lock with two keys.3)Product size:260×90×410(mm) Packing size: 395×270×430(mm)/4pcs4)Powder coated interior and exterior5)Waterproof and rust protection6)Available color:black, green, red, white,gray etc7)Delivery lead time: 30 to 45 days