USPS Approved for Replacement

New USPS regulations related to wall-mounted, clustered type of mailboxes were introduced in 2004. These were the first changes to “apartment style” mailboxes in more than 30 years.

This new regulation, STD-4C, replaces all previous regulations for mailboxes such as these, which were previously approved under STD-4B and STD-4B+. However, if you project is not disturbing the wall the mailboxes are already mounted in, then replacing old mailboxes with a product similar in style, or adding security kits to existing boxes is typically acceptable.

Any adjustment to the rough opening in the wall will require new STD-4C compliant mailboxes, however. So, be sure to check with your local Postmaster or Postal Growth Coordinator to determine mailbox requirements for your specific renovation/replacement project if there is any question related to compliance.

Florence Manufacturing has been the leader in clustered mailboxes since 1934 and is pleased to still offer many of the same mailboxes used during the STD-4B postal regulation.