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foursite series high security 4C mailboxes meet or exceed all security requirements of the new USPS STD-4C regulation for wall receptacles. These high security 4C horizontal mailboxes are constructed of heavy gauge aircraft aluminum and 300 series stainless steel components for superior strength, corrosion resistance, and exceptional outdoor durability. Our foursite series 4C mailboxes offer a wide selection standardized modules to choose from. Customized 4C mailbox modules are also available - Please call our well trained and professional Customer Service staff for assistance with your custom 4C mailbox. Click on your desired category below:
High security 4C horizontal mailboxesflorence manufacturing 4C mailboxpostal specialties division 10550
Category 1 - 39-inch Unit HeightCategory 2 - 18-inch Unit HeightCategory 3 - 51 1/4-inch Unit Height
4C mailboxhigh security 4C mailboxesUSPS-STD-4C mailboxes
Category 4 - 21 1/2-inch Unit HeightCategory 5 - 56 1/2-inch Unit HeightCategory 6 - 54 3/4-inch Unit Height
4C horizontal mailboxespostal specialtiesfoursite series 4C horizontal mailboxes
Category 7 - 28 1/2-inch Unit HeightCategory 8 - 40 3/4-inch Unit HeightCategory 9 - 37 1/4-inch Unit Height

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