The USPS Approved Supreme LL, has a Large opening to accept small parcels and a high volume of bundled mail. This box is 36″ tall to accommodate many days of mail. The Supreme is excellent as a built-in unit, into a wall or pilaster for a decorative look. Available in front or rear access. 5-1/2″ H x 11 ” W Incoming Mail Slot, Very large* (small shoebox opening). 3″ H x 11″ W Outgoing Mail Tray can be modified ( deleted, larger or smaller add $50 ) Flag Included with High Security Lock and 3 Keys. Constructed of Galvanized Steel or upgrade, Aluminum or Stainless Steel ;Powder Coat Finish in 5 attractive colors. Conditional Lifetime Warranty. Uses: Residential or Business. Call 877-925-6245 for quality discounts or more information.