ò Galvannealed - steel mail and package delivery box ò Locking letterbox secures incoming mail and packages ò Full service unit with Incoming and Outgoing Compartments (includes carrier service flag) ò Security-Drop Door - US Pat. 6,347,737 ò Delivery agents simply open, drop and go translating to more stops per hour ò Rear key-locked access doors ò Stainless steel hinges ò Constructed of heavy-duty, 16 gauge steel ò Durable powder coated poly-hammer finish ò Colors: Black, White, Green and Gray ò Replaceable doors ò Dimpled and angled bottom panel protects deposited items from possible leaky packages ò Electrical knock-outs for underground feeds ò United States Postal Service Approved