The wall mounted Letterbox made of powder coated steel, matte surface, rustproof and durable construction.protection to your posts from weather elementsProduct parameterProduct name: Wall-mounted lock mailboxMaterial: cast aluminum for upper part and door panel Process: Die-casting + rice gold + plastic sprayingDelivery Port Size: 24×4CMEffective Inner Diameter: height 35×width 28×thickness 10.8cm / 13.8×11×4.2InMaximum Outer Diameter: height 41×width 29×thickness 13cm / 16×11.4×5.1InPacking List:Mailbox×1Plastic expansion tube×3Screw×3Rubber pad X3Key×21.The Lid of this wall-mount letterboxes fully overlaps box, reducing the chance for rain, snow, leaves, or dust from entering.2.The wall mounted post box has plenty of room for all of your mail, including large oversized envelopes, letters, magazines, and even small parcels.3.Lockable and SafeNotice:About color: The product picture is taken in kind, but due to lighting, display and other reasons, there may be a slight color difference, please understandAbout size: The product size is measured manually, there may be an error of 1-2cm, please understand