Introducing the 4C suite of mailboxes by Auth Florence, which strengthens security requirements for the entire unit. The new 4C series standardizes and improves tenant compartment lock design.

The mailbox is constructed of heavy gauge aluminum and 300 series stainless steel components for superior strength and exceptional outdoor durability. These rugged mailboxes have a corrosion resistant weatherproof powdercoat finish.

These units have a solid aluminum mail slot frame similar to the high security CBU design, which protects adjacent customer compartments and the collection compartment.

Each tenant compartment conforms to the new minimum size requirement of 12"W x 15"D x 3"H. New door sizes are now available giving you limitless options.

Hinged rear door panels are constructed of heavy gauge steel and are powder coated in a durable postal grey finish. The USPS requires that these rear loading 4C mailboxes be located in a room that is secure and not open to public access.

The 4C comes with either number decals, with up to three digits, or engraved identification, with up to six characters. The 4C introduces the parcel locker requirement based on a 1:10 parcel locker to tenant compartment ratio.

The parcel lockers offer a unique double locking mechanism for added mail and package security. An optional surface mount collar is available if you do not have enough wall depth to fully recess the 4C mailbox. An optional mail slot plug to restrict access to mail slots is available. Call for details.

See all the front loading or rear loading 4C mailboxes.

These 4C mailboxes are required by the USPS on all new construction and major renovations. After placing your order, one of our commercial mailbox specialists will contact you within 24 hours to review your custom mailbox order.