Postal Products Unlimited, Inc. is a leading manufacturer of high-security 4C Mailboxes in Milwaukee, WI. Their innovative designs feature protective lock rims, 3-point lock cams, and smaller pry points, ensuring maximum mail security. These USPS-approved mailboxes are ideal for a wide range of applications, from residential buildings and multi-family residences to government agencies and medical facilities.
With a flush surface design, concealed hinges, and double-wall door construction, the 4C Mailboxes offer unparalleled strength and tamper resistance. Easy to install between wall studs, these mailboxes come with outgoing mail slots and carrier access doors, making them suitable for centralized mail delivery locations and private postal centers. Postal Products Unlimited, Inc. is committed to providing top-quality mailboxes that meet the highest standards of security and functionality.
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