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4-Pack Value – Includes 4 window locks per order for multiple windows or added security.
Strong & Reliable – Made from durable extruded aluminum with steel screws for a secure hold.
Locks in Airflow or Full Close – Keeps windows safely locked while allowing for ventilation.
Fits Metal Tracks Only – Compatible with metal window sills up to 1/8" thick; not for plastic frames.
Tool-Free Installation – Easily hand-tighten onto the sill fin; no drilling required.

This 4-piece set of aluminum sliding window locks is designed to fit horizontal sliding metal-framed windows. Each lock mounts directly onto the window sill fin using a steel screw, securing the window in either a closed or ventilated position.Perfect for home security and child safety, these locks are easy to install and remove by hand. Not suitable for plastic sills or frames. Must be used on sturdy metal window sills with a fin at least 1/8" thick.