Mailbox Lock Replace USPS-L-1172C National Mailbox Lock C9100, Fit for CompX L-1172C NDCBU CBU Cluster Mailboxs with 3 Keys, 5 Set

Product Features: Made of alloy steel, sturdy and durable. Rust-proof and corrosion-resistant, suitable for long-term outdoor use. Pin tumbler lock cylinder, smooth unlocking, high security. Compatible with L-1172C standard, easy replacement. Each lock has a unique key code. Metallic silver appearance, beautiful and elegant. Compatible Brands and Models: Fit for CompX L-1172C National Mailbox Lock Fit for USPS L-1172C Post Office Mailbox Lock C9100 Fit for CBU Community Mailboxes Fit for NDCBU Neighborhood Centralized Mailboxes Suitable for outdoor upright public or community mailboxes Complete Replacement Kit: Each kit includes 1 × C9100 lock cylinder 3 × keys 1 × spring clip 1 × mounting nut 5-set package: Suitable for property maintenance, centralized replacement, and bulk purchase. Installation Steps: Remove the nuts and clips from the old lock. Insert the new lock cylinder. Reinstall the nuts and clips to secure it. Test the key insertion for smooth operation. Reinstall the latch. Maintenance: Apply lubricant occasionally. Do not use corrosive cleaners. Replace the lock promptly if it becomes jammed or worn.

• Widely Compatible: Fit for USPS L-1172C National Post Office Box, Fit for CompX L-1172C/C9100, Fit for CBU Community Box, Fit for NDCBU Central Box, and Outdoor Vertical Box. Standard size, seamlessly replacing the original lock
• High-Quality Alloy Steel Material: The mailbox lock cylinder is made of high-quality alloy steel, possessing excellent rust and corrosion resistance, and can withstand long-term exposure to sun and rain. It uses a pin tumbler lock cylinder, providing structural stability and enhanced security.
• Anti-theft Design: Each lock uses an independent key system (Keyed Different), effectively preventing unauthorized use of the same key. Provides a higher level of security for mail, packages, and personal privacy.
• 5-Set Large Capacity: Each set includes 1 C9100 lock cylinder, 3 keys, 1 spring clip, and 1 mounting nut, for a total of 10 sets, suitable for centralized property replacement or community maintenance. (Note: Locking bolt/latch not included; please retain your original old locking bolt.)
• Smooth and Durable: The standard design allows for non-destructive replacement. Simply remove the old lock, insert the new lock, and secure it in. With proper lubrication, it maintains smooth opening and closing performance for a long time, suitable for long-term outdoor use.