Sliding Track Lock: Secure your patio door, sliding glass door, and both horizontal & Vertical sliding windows. Ideal for securing a vertical window air conditioner or window fan setup.,Durable & Sensible: Made of heavy-duty aluminum the lock includes a vinyl lining to prevent you from scratching your window frame. The vinyl insert provides additional gripping power when locking your windows down.,No Tools Needed: These window locks are easy to install with the lock thumb screw securing sliding door & window tracks up to 3/16" wide.,Child Proof Door Locks: Use this window lock to protect your family from intruders and more! The sliding door lock allows you to leave sliding windows & doors securely locked in position, whether fully closed or ajar to allow a breeze.,Window Locks Security: Whether you are looking for a way to lock in an AC unit window setup, as a camper lock replacement, or as part of your baby proofing house setup.