Secure your glass display cases, vivariums, and sliding terrarium doors with this heavy-duty Sliding Glass Door Ratchet Lock. Engineered to slip easily onto overlapping sliding glass track systems, this durable lock prevents doors from being opened or bypassed, keeping your animals safe inside and unauthorized hands out. Featuring a heavy-duty chrome-finished metal bar and a smooth ratcheting lock barrel, it clamps firmly onto glass panels up to standard thicknesses without requiring drilling or permanent modifications to your glass. Each lock comes complete with two matching keys for convenience and peace of mind. Product Details: Bar Dimensions: 3-3/4" L x 1-1/8" W (92.2 mm x 28.6 mm) Mechanism: Ratchet bar with keyed lock cylinder Package Includes: 1 Ratchet bar, 1 lock barrel mechanism, and 2 keys Installation: Tool-free slip-on installation (no drilling required) Why We Love It: No-Drill Security: Easily slides onto overlapping glass doors to provide instant physical security without risking glass cracking or damage. Compact & Low Profile: Measuring just 3-3/4" long, it maintains a clean, unobtrusive look on display cases and terrariums. Smooth Ratcheting Mechanism: Allows you to adjust and tighten the lock cylinder precisely to fit your glass overlap snugly. Includes 2 Keys: Comes with a spare key to ensure you always have access during feeding time or maintenance. Perfect For: Sliding glass terrariums, vivariums, reptile racks, retail display cases, and showcase cabinets.