Vevor Mailbox Through-the-Wall Drop Box with Combination Lock 12.6 x 6.22 x 16.9" Dark Gray NewThe Vevor through the wall drop box is a heavy duty steel mailbox designed to keep mail and small deliveries secure and protected from the elements. Its rain resistant design includes a large front shield, drainage holes, and rubber pads to help keep contents dry. A combination lock and internal metal baffles add security while eliminating the need for keys. The adjustable slider design fits a range of wall thicknesses for flexible installation in