We recently completed a specialized commercial lock cylinder change project for Rollins, to accommodate the customer’s existing master key system requirements. The project involved modifying the existing locking hardware to properly accept a new core while maintaining compatibility with the customer’s established master and operation key system.
In commercial facilities, master key systems are critical for maintaining controlled building access, operational efficiency, and security management. Hardware modifications are sometimes necessary when existing lock components must be adapted to work with updated or customer-specific keying requirements.


Project Details
On this project, our team disassembled the existing locking apparatus mounted to the commercial door in order to remove the mortise housing from the door. This process allowed the proper housing modifications and adjustments needed to accommodate the new core required for the customer’s master and operation key system.
Because the customer already had an established master key system in place, careful attention was required to ensure compatibility with the existing security infrastructure while maintaining proper lock operation and door security.
- New lock cylinder core
- Modified mortise housing components
- Commercial lock hardware adjustments
- Master key system compatibility setup
- Reassembled commercial locking apparatus
- Commercial-grade locking hardware components
The Results are Clearly visible
The completed cylinder change allowed the customer to successfully integrate the door hardware into their existing master key system while maintaining secure and dependable lock functionality. The modified mortise housing now properly accommodates the required core and supports smoother day-to-day access control operations.
Custom commercial lock modifications like this help businesses maintain consistent security standards across facilities while improving compatibility with existing master key systems and access management procedures.
If your office building, warehouse, commercial facility, or industrial property needs lock cylinder replacement, mortise lock modifications, or master key system hardware services, Door Resources can help throughout the Atlanta area.



