Standard Rear Access Heavy Duty Letter Locker Mailbox White Features These high-security locking mailboxes hold up to 2 weeks of mail. Letter lockers are made using 10 gauge electro-galvanized steel with one-piece framing for maximum strength. A 2 H x 11 W incoming mail slot and 3H outgoing mail tray are housed behind a magnetic door, allowing mail to be dropped in and stored safely. Rear access mail boxes feature a locking door in the back. Ideal for pilaster settings and recessed walls. These mailboxes include Medeco high security deadbolt with 2 keys for security. Includes a stainless steel red flag. Hardware included. Powder coat finish. Color Finish - White 10 Gauge Steel