Prime-line MP4049 Mail Box Lock Keyed 5/16 in Bolt

Product Description

The PRIME-LINE MP4049 is a keyed mailbox lock designed for secure, reliable mail compartment access in residential and commercial apartment settings. Constructed from steel with a brass-plated finish, it features a heavy-duty 5/16 inch bolt throw and a 3/16 inch offset keyway. The key can only be removed when the lock is in the locked position, providing a built-in security confirmation for property managers and installers. This lock is intended for installation by locksmiths, maintenance technicians, or skilled tradespeople working on apartment mail systems.

This lock fits old-style apartment mailboxes manufactured by Bommer. It is suited for multi-unit residential buildings where individual locking mail compartments are required. The brass-plated finish provides corrosion resistance appropriate for interior mail room environments. Installers should reference the manufacturer line art drawing and compare dimensions against the existing mailbox cutout before ordering to confirm fit.

Key Features

• Heavy-duty 5/16 inch bolt throw for secure compartment latching
• 3/16 inch offset keyway design
• Key removal only in locked position - confirms lock engagement
• Steel construction with brass-plated finish for durability
• Designed for old-style Bommer apartment mail boxes

Compatibility

Designed to fit mailboxes manufactured by Bommer, specifically old-style apartment mail box units. Verify existing cutout dimensions against the manufacturer line art drawing before installation.

Installation Notes

Installation is typically performed by a locksmith or building maintenance technician. Before servicing, ensure the mail compartment is empty and that access to the installation area is properly authorized. Standard hand tools are generally sufficient for lock replacement. Always confirm the bolt throw and keyway orientation align with the existing mailbox body before final installation.