4-High Single-Wide Surface Mount Collar Enclosure for 4C Horizontal Mailbox Unit – HSM04S

Product Code: HSM04S
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High-quality Commercial Horizontal Mailbox Products Made in the USA

Wholesale Prices

The NEW line of 4C Horizontal mailbox products at National Mailboxes are perfect for apartments and multi-tenant buildings. Choose from mailboxes that meet or exceed all security requirements of the USPS STD-4C regulation for wall-mounted mail receptacles. 4C Horizontal commercial mailboxes are designed to ensure that a maximum number of USPS compliant tenant compartments are available within the given height, and meet Fair Housing ADA installation requirements. They are also ideal for private delivery applications.

Overall Dimensions: 17-7/16″H x 18-5/16″W x 17-11/16″D
Height From Floor: Mount 34-7/16″ Up From Floor

Product Features:

  • Surface-mount collars for 4C versatile mailboxes are the perfect accessory when a surface-mount application is needed
  • Easy to install – no wall cut required
  • 4C horizontal mailboxes sold separately
  • USPS Approved
  • Please Note: This Enclosure is made to order and is non-returnable

4C Mailbox Colors: Antique Bronze, Black, Dark Bronze, Gold Speck, Postal Grey, Sandstone, Silver Speck, and White

Finish or Material: Heavy gauge aluminum construction

Loading and Mounting: Surface Mount Collars for use with Front-loading 4C mailboxes and accessories ONLY (4C mailboxes sold separately)


4C Surface Mount Collar Installation Manual
Care and Cleaning
Sustainability & Leed


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