Salsbury Industries 3504ARU Vertical Mailbox - 4 Doors - Aluminum - Recessed Mounted - USPS Access
- Recessed mounted units fit into a rough opening and are secured with mounting hardware through the back or side panels
- Approved to the required security upgrades of USPS-STD-4B+ and are ideal for apartments, condominiums, commercial buildings and many other applications
- The rough opening for recessed mounted vertical Mailboxes is 1.5 in. less than the unit's width, 1.25 in. less than the unit's height and equal to the unit's depth