Commercial Mailboxes for USPS Delivery
US Mail Supply carries indoor & outdoor mailboxes, cluster units, postal drop boxes, and more mailboxes for USPS access. All products featured here are built of heavy-duty steel and aluminum, ensuring your product survives snow, sun, rain, and more.
Cluster Mailboxes (CBU's)
USPS approved outdoor mailboxes & CBU's from US Mail Supply are ideal for installation on any corporate campus or multi-building property. These commercial mailboxes are built to USPS size and construction standards. The curbside pedestal mount and heavy-duty construction are built to withstand everything from the frigid snow of Wisconsin to the blazing sun of Arizona.
4C Horizontal Mailboxes
Made of steel and aluminum, USPS approved 4C horizontal mailboxes from US Mail Supply are a heavy-duty option for apartments, condos, schools, municipal buildings and more. All 4C horizontal mailboxes from US Mail Supply are built to meet the construction and sizing requirements of the United States Postal Service.
4B+ Vertical Mailboxes
Available in five sizes, vertical mailboxes from US Mail Supply are USPS approved replacement mailboxes for commercial use. Choose from three to seven door options to find the best wall mounted mailbox for your facility. All vertical mailboxes from US Mail Supply are built to meet all USPS size and construction requirements.
4B+ Horizontal Mailboxes
USPS approved replacement commercial horizontal mailboxes from US Mail Supply are ideal for use in offices, schools, and apartment lobbies. Made of heavy-duty steel and aluminum, horizontal mailboxes are built to meet the size and construction requirements of the United States Postal Service.
Drop Boxes & Postal Specialties
Commercial postal drop boxes from US Mail Supply for USPS access are available in a wide range of styles and sizes. Pedestal mounted commercial drop boxes meet all USPS size and construction requirements. Packages and letters will be safe in a locking commercial drop box from US Mail Supply.
Shop USPS-approved mailboxes from U.S. Mail Supply
Many commercial mailboxes are manufactured by Florence to comply with USPS approval right out of the box for new construction (although it's ALWAYS a good idea to contact your local postmaster to make sure), while some are only USPS approved as a replacement to existing systems. Browse our commercial and residential USPS approved mailboxes and choose indoor/outdoor mailboxes built for USPS compliance.
USPS approved mailboxes from US Mail Supply can be mounted on wall surfaces, recessed into apartment lobby walls, or even pedestal mounted outside your commercial facility. Not sure what mailbox is best for you? US Mail Supply is here to help you choose a mailbox for your commercial facility. US Mail Supply ensures you have the right USPS approved mailbox for:
- Apartment Buildings
- Schools
- Municipal Buildings
- Dormitories
- Office Buildings
- Military Bases
- And More
