Your CBU Resource

Page Specialty Co. is the preferred dealer for Cluster Box Unit mailbox installation and service.

STD-4C Compliance

As of October 6, 2006, USPS STD-4C compliant mailbox systems are mandatory on all NEW CONSTRUCTION and MAJOR RENOVATIONS.

Mailboxes that are 4B+ compliant will only be considered USPS Approved if they are replacing existing mailboxes in an existing rough wall opening that is not being disturbed or changed during the renovation. If you have USPS compliance questions related to your specific project, please contact your local Postmaster.

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