Featuring a easy, slide on installation process, these adjustable security locks fit most standard window sizes while maintaining a low profile designs that doesn ’ t obstruct window functionality Engineered with impacts resistant construction, these window security accessories provide tamper resistant reinforcement while remaining discreet and weatherproof for year round durability Use these versatile locks to reinforce outward opening window in campers, trailers, or residential properties during travel, storms, or extended periods of vacancy Enhances your window security with these locks designed to existing catches from rotating into the open position, adding extra layer of protections against unauthorized access Ideal for campers owners, homeowners, and apartment dwellers seeking security upgrades without permanent modifications to their existing window hardware, Manufacturer: HZBB