Aluminum Sliding Window Security Locks — 4-Pack Key benefits No-drill installation: mounts quickly and cleanly without drilling into frames, protecting window integrity and paint. Reinforced security: high-quality aluminum construction and solid steel thumb screw provide added resistance to forced entry while keeping the window operable. Maintain ventilation: secures sliding windows in fully closed or partially open positions so you can control airflow without sacrificing safety. Corrosion-resistant finish: durable aluminum design resists rust and maintains a clean appearance and unobstructed sightlines over time. Adjustable fit: thumb-screw adjustment allows the lock to accommodate a range of sliding window gaps and stop positions. Product features Pack contents: set of 4 window locks. Materials: corrosion-resistant aluminum body with steel thumb screw for secure fastening. Function: locks sliding windows in closed or limited-open positions; prevents accidental openings by children or pets. Installation: tool-free, no drilling required; installs on most sliding window frames using an adjustable clamp mechanism. Who it’s for Homeowners who want extra protection on ground-floor or accessible windows. Families with young children or pets who need to prevent accidental window openings while allowing airflow. Small businesses and offices seeking an unobtrusive security upgrade for sliding windows. Practical use scenarios Ground-floor bedroom: secure the window partially open to get fresh air at night while limiting the gap to prevent unauthorized entry. Family room or nursery: stop small children from pushing the window open fully while keeping the room ventilated. Retail storefront or office: add a low-visibility layer of security to sliding windows and display areas without altering the frame. Why choose this product Combines ease of installation with a durable, corrosion-resistant build. Adjustable design and steel thumb screw deliver reliable holding power without permanent modification to the window. Four locks per set let you protect multiple windows or multiple points on larger sliding units. Specifications summary Quantity: 4 locks per set Body: aluminum (corrosion-resistant) Fastener: steel thumb screw Installation: no drilling required, adjustable clamp-style fit Function: secures sliding windows in closed or partially open positions If you need secure, low-profile protection for sliding windows that preserves ventilation and avoids drilling, this 4-pack aluminum lock set offers an adjustable, durable solution.