This bundled version of the ENFORCER® Roll Up Door Lock includes both the slam lock system and the Quick Release add-on for enhanced security and safety. The ENFORCER® Roll Up Door Lock is a heavy-duty, automatic "slam lock" designed to secure roll-up doors on box trucks and trailers. Once the door is closed, the lock engages automatically, no need for drivers to manually apply a padlock or hasp. Included in this bundle: Roll Up Door Lock body with pre-installed ABLOY® lock cylinder Steel floor-mounted boot (8050-ST) and installation hardware Quick Release mechanism (8051) – allows the locked door to be opened from the inside, enhancing driver safety and convenience Why bundle with the Quick Release? Adding the Quick Release enables interior egress making it a smart choice for fleets prioritizing safety compliance or requiring internal door access in emergencies.