Shop all 4C mailboxes for sale online from U.S. Mail Supply.
US Mail Supply Has Quality 4C Indoor Mailboxes at Affordable Prices
US Mail Supply provides high-quality indoor depot mailboxes at affordable prices. 4C horizontal mailboxes are perfect for facilities and communities where the USPS delivers to a single, centralized location. A master commercial lock grants facility managers simultaneous access to all compartments for easy mail distribution.
4C Horizontal Indoor Mailboxes from US Mail Supply can be customized to meet the needs of buildings, including:
- Colleges
- Dormitories
- Hotels
- Financial Institutions
- K-12 Schools
- Military Bases
- Private Medical Facilities
- And more
