Mail delivery will be easier and more secure with this four-door vertical mailbox as part of your business design. Great for college, governmental or other commercial applications, the boxes allow individual access with separate locks for each box and features a sleek recessed mount design that also allows for mailroom access. Mailboxes are ideal for colleges and schools, corporate mailrooms, government agencies and many other applications . Recessed mounted units fit into a rough opening and are secured with mounting hardware through the back or side panels . Fully integrated flanged collar which fits over the rough opening . 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 . Includes a master commercial lock with two keys. Comes standard with lock and keys for each individual mailbox. Does not include master lock for U.S.P.S entry; must be provided by U.S.P.S. . 24.25 in. W x 7.5 in. D x 19 in. H (30?lbs.)