The front-loading 1600 series horizontal mailboxes are ideal for use in large, private installations not serviced by the USPS such as colleges, universities, military bases, and office buildings.
The smaller compartment size does not meet USPS regulations, but is very convenient when wall space is limited since more mailboxes can fit into each module. These 39-door private distribution mailbox systems do meet all other USPS regulations.
All tenant compartments measure 4" x 5" with a 5-pin cam lock, two keys, and a 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. This door can, however, be used as an outgoing mail slot or office dropbox upon request.