COMPX NATIONAL USPS-L-1172C National Mailbox Lock C9100 – Lock with 3 Keys

Overview

Introducing the COMPX NATIONAL USPS-L-1172C National Mailbox Lock C9100, a compact, dependable solution designed for standard mailbox housings. Built for steady daily use, this lock offers straightforward access control with a clockwise rotation, helping you manage mail access with ease in homes, small offices, or property-managed properties.

What’s Included

• Includes spring clip, mounting nut, and three keys
• Does not include cam or latch
• C9100 operates clockwise

Key Benefits and Use Scenarios

• Three keys provide convenient access for trusted users, reducing the need for key sharing
• Compact design fits a wide range of USPS mailbox housings for easy pairing with existing setups
• Clockwise operation offers predictable, simple use during daily mail retrieval

Real-world use often centers on secure, practical mail access. The included spring clip and mounting nut help you install the lock with minimal fuss, while the three keys offer flexibility for households or small teams. The absence of a cam or latch in the kit means installation and compatibility checks with your mailbox housing are important steps before purchase.

Installation and Compatibility

This model emphasizes clockwise operation, so plan your installation to align with the mailbox orientation. Since cam or latch components are not included, verify your mailbox’s existing hardware and the need for additional parts before completing the setup. Proper mounting helps ensure consistent performance and reliable key access.

Why Choose COMPX NATIONAL

COMPX NATIONAL delivers practical, purpose-built components designed for everyday use in mailboxes. The USPS-L-1172C designation reflects a focus on standardization and compatibility, while the C9100 variant emphasizes user-friendly operation and ready-to-use key access. Consider this lock as a straightforward option for upgrading mail security without overhauling your current hardware.

Real-Life Benefits

Users may notice smoother daily mail retrieval, more controlled access for multiple residents or staff, and a neat, uncluttered mounting profile. While results can vary by mailbox model, this lock is designed to align with common housing dimensions and provide a reliable, no-fruss setup for daily use.