The front-loading 1600 series horizontal mailboxes were developed for use in large private installations not serviced by the USPS, including military bases, hotels, office buildings, universities, and colleges.
The compartment size of this 23-door lockable systems is smaller than USPS regulations, but convenient when wall is limited space because more mailboxes fit in each module. The private distribution 1600 units do meet all other USPS regulations.
Each tenant door measures 4"W x 5"H 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 cannot be used as a tenant door; it can still be used as an outgoing mail slot or office dropbox upon request.