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4C - Commercial Boxes PDF Print E-mail

Flexibility Without the Fuss

Versatile™ 4C mailbox suites meet or exceed all security requirements of the USPS STD-4C regulation for wall-mounted mail receptacles. Florence 4C commercial mailboxes are constructed of heavy gauge aluminum and 300 series stainless steel components for superior strength, corrosion resistance and exceptional outdoor durability for cluster box units.

Our unique, patented double-locking parcel door mechanism makes sure your mail and packages stay safe and secure while our rugged, corrosion resistant powder coat finish resists scratching and vandalism to make sure your Florence versatile™ 4C mailbox system looks as appealing in the years ahead as it does the day you install it.

WHAT IS THE NEW "4C" POSTAL STANDARD?

As of October 5, 2006, all new designs approved for NEW CONSTRUCTION AND MAJOR RENOVATION require U.S. Postal Service STD-4C compliant mailbox systems. The new USPS 4C Standard for wall-mounted mailboxes includes the following specifications:

  • A new compartment form factor minimum size requirement of 12″w × 15″d × 3″h.
  • Eliminates the vertical form factor (5″w × 6″d × 15″h) design.
  • Introduces parcel locker requirement based on a 1:10 parcel locker to customer compartment ratio.
  • Strengthens security requirements for the entire receptacle.
  • Standardizes and improves tenant compartment lock design.
  • Meets Americans with Disabilities Act (ADA) standards.

    HOW DOES THE NEW 4C POSTAL REGULATION AFFECT THE MAILBOXES I Install?

    Existing vertical and horizontal mailboxes will only be USPS Approved FOR REPLACEMENT PURPOSES. They will no longer be USPS Approved for New Construction or Major Renovation projects.

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    Roadsafe Traffic Systems, Inc.