Gibraltar Mailboxes WMH00W04 is a wall-mount mailbox designed for outdoor use. It is intended to be mounted under a covered area to prevent rain from getting between the mailbox and the wall. The mailbox comes with a template for easy installation, and it can be mounted using #8 or #10 pan head Phillips screws of adequate length. For wood panel walls, the screw length should be approximately 1 inch. For masonry, stucco, or metal walls, a minimum #8 plastic anchor and screw should be used. The mailbox is made in the USA and comes with a warranty from Gibraltar Industries.