Prime-line MP4048 Mail Box Lock 1/4 Inch Throw Brass Plated

Product Description

The PRIME-LINE MP4048 is a brass-plated steel mailbox lock designed for standard deadbolt applications in residential and apartment mail delivery systems. The key cylinder sits offset 1/8 inch from center, and the bolt throw measures 1/4 inch, providing a secure latching action suited to thin-door mailbox construction. Built from alloy steel with a brass-plated finish, this lock delivers corrosion resistance in an exterior or vestibule environment. Locksmiths, property maintenance technicians, and facilities professionals install this lock as a direct replacement on older-style apartment and cluster mailbox units.

This lock is designed for old-style apartment mailboxes and fits units manufactured by Auth, United, and Florence. It is well suited to residential multi-unit buildings, apartment complexes, and commercial mail center installations where standardized replacement hardware is required. The single-pack format is appropriate for individual unit replacement rather than bulk re-keying projects.

Key Features

• 1/4 inch bolt throw for standard mailbox deadbolt applications
• Key cylinder offset 1/8 inch from center to match OEM mounting geometry
• Alloy steel construction with brass-plated finish for durability and appearance
• Compatible with old-style apartment mail box form factors
• Single-pack format for individual unit service calls

Compatibility

Fits mailboxes manufactured by Auth, United, and Florence, including old-style apartment mail box units.

Installation Notes

Installation is typically performed by a locksmith or facilities maintenance technician. Ensure the mailbox door is fully accessible and the existing lock cylinder is fully removed before fitting the replacement. Verify the offset and bolt throw dimensions match the existing cutout before installation. Work should conform to applicable building and property access codes for multi-unit residential or commercial mail facilities.