Prime-Line 1-7/8 in., Aluminum Double Thumbscrew Sliding Door Lock

This is a heavy-duty extruded aluminum with double thumbscrew that adds additional gripping power to securely lock your windows in closed or ventilating position. They are easy to install by twisting the thumbscrew secure in place. The double thumbscrews add additional locking capability. Exercise caution and do not over tighten these locks and cause damage on your window track.

• Secures quickly and easily to your window frame or fin
• Constructed from extruded aluminum
• Facilitates window locking at ventilating position