D3-W - Through-The-Wall Drop Box with Rainproof Cover | Heavy Duty Through Wall Mailbox with 10-Inch Adjustable Chute | Rainproof Locking Drop Safe for Mail, Rent, Checks, Cash, and Keys, GrayDURABLE & WEATHER RESISTANT DESIGN: Built with a stainless steel cover, galvanized steel chute, and cold rolled steel box, this through wall mailbox is designed to withstand the elements. The rainproof cover keeps your mail, checks, keys, and other items safe, dry, and clean. THROUGH WALL INSTALLATION: Designed for walls 5. 5'' to 10'' thick, this wall mounted drop box is compatible with most common wall types. Includes all necessary hardware for