PREMIUM THUMBTURN LOCK: Streamlines the locking and unlocking process with its user-friendly thumbturn mechanism, eliminating the need for a key. Engineered to be seamlessly compatible with Adams Rite 4066. This innovative cylinder offers enhanced convenience and security for your access control needs. HIGH-QUALITY MATERIAL: Made to last with strong materials, our Adams rite door lock promises a long-lasting performance you can rely on. This thumbturn lock is carefully chosen for durability, ensuring it stands the test of time and remains consistently reliable. Choose quality that endures choose our meticulously designed product for lasting excellence. CONVENIENT TO USE: Easy-to-use with a thumbturn, this lock lets you lock and unlock from inside effortlessly. The adams rite thumb turn designed for all ages. It is simple, secure, and user-friendly, ensuring a smooth experience whether you're securing your space or needing quick access. ADAMS RITE CAM: Meet our newest thumb locks, featuring the impressive Adams Rite style known for top-notch security and unmatched durability. We've put in the latest technology to make sure your belongings are not only safe but also stand the test of time. This thumbturn lock is all about giving you peace of mind reliable security and long-lasting quality all in one. EASY INSTALLATION: Tailored for do-it-yourself enthusiasts, this cylinder lock with thumbturn is thoughtfully designed to make installation a breeze. Whether you're a beginner you'll appreciate the user-friendly features that ensure a quick and hassle-free setup this thumb lock. Interchanges with Standard 1" [25.4 mm] Length, 1-5/32" [29.4 mm] Diameter Mortise Cylinder. Upgrade your storefront door's security with the Summit Doorware Adams Rite Style Thumbturn Lock. This high-quality thumbturn cylinder is a perfect replacement for the renowned Adams Rite 4066. It allows you to operate the deadlock or deadlatch without the need for a key, making entry and exit convenient. The cylinder interchanges seamlessly with standard 1" [25.4 mm] length, 1-5/32" [29.4 mm] diameter mortise cylinders. With this thumbturn lock, you can easily lock the door by turning a bolt instead of relying on a key. The thumb turns are attached to the doorknob through the latch mechanism. By rotating the thumb turn, you can shift the position of the bolt, enhancing security and peace of mind. Please note that the thumb turn mechanism is present only on the interior side of the doorknob for safety reasons. For added security and functionality, the package includes a cylinder trim ring. This durable trim ring is designed for use with mortise and rim cylinder locks. It is 1/4" [6.4 mm] thick, suitable for 1-3/4" [44.5 mm] thick doors. The trim ring features a 26D or DU finish, ensuring an attractive appearance while providing reliable security. Enhance the security and convenience of your storefront door with the Summit Doorware Adams Rite Style Thumbturn Lock and Cylinder Trim Rings. Upgrade today!