Florence Mailboxes: CBU, 4C & Commercial Units

Brand Overview: About Florence Corporation

Florence mailboxes are manufactured in Manhattan, Kansas, at Florence Corporation's headquarters at 5935 Corporate Drive; the same company that has been building centralized mail delivery hardware since 1934. Florence Corporation (also sold as Auth Florence or AF Florence) is USPS-approved for both Cluster Box Units and 4C horizontal mailboxes, the two dominant centralized-delivery systems in U.S. multi-family and commercial construction.

The company started in a downtown Chicago garage, founded by Saulia O. Florence and Herbert Dix. By 1939, Florence had patented the vertical mailbox, a design that remains in active use for retrofit installs today. Manufacturing relocated to Manhattan, Kansas in 2003, and in 2007 Gibraltar Industries acquired the company. The Kansas production model stayed intact.

Florence Corporation holds ISO 9001:2015 and ISO 14001:2015 certification, making it the only centralized-mailbox manufacturer with both quality and environmental management credentials. That distinction carries weight for architects and specifiers who need to document manufacturer qualifications in project submissions. The company has earned six USPS Supplier Excellence, Quality, and Innovation awards, and served on the USPS consensus committee that developed USPS STD-4C, the current standard for wall-mounted centralized mailboxes in new construction and major renovations. The Smithsonian National Postal Museum has recognized Florence as a defining manufacturer in its America's Mailing Industry exhibition.

Florence mailboxes are used in apartment complexes, condominiums, dormitories, office parks, military bases, and HOA developments across the country. Budget Mailboxes is an authorized Florence dealer carrying the full Florence catalog: CBUs, 4C horizontal mailboxes, 4B horizontal mailboxes, vertical mailboxes, and parts. Every order ships with the 5-year limited warranty intact, bulk pricing on orders of two or more units, and free shipping over $99.