The 1600 series horizontal mailboxes are ideal for use in large, private installations not serviced by the USPS such as military bases, universities, and office buildings.
The compartment size, smaller than USPS regulations, is very convenient when wall space is limited since more mailboxes fit in each module. These 39-door private distribution 1600 mailbox systems do meet all other USPS regulations.
All tenant doors measure 4" x 5" with a 5-pin cam lock, two keys, and a clear plastic number slot for tenant identification. Please note that one door will be used as a master door and therefore cannot be used as a tenant door; it can, however, still be used as an outgoing mail slot or office dropbox upon request.