NOTE: Not intended for a patio door, windows only. | EACH PACK INCLUDES - (1) Adjustable jaw that fits all vinyl frame rail thicknesses from 1/16 inch up to 1/2 inch thick. "Vise like" grip holds securely and will not mar frame. Allows window to lock in ventilating position; cam style locking lever; no tools required. This is for Vinyl Windows only. | SECURELY LOCK WINDOWS - These U 9809 sliding window locks for vinyl windows help keep them securely closed. The locks feature an adjustable jaw that has a “vise-like” grip, and they are capable of opening up to 1/2 inch wide. | ADD EXTRA SECURITY - Use these sliding window locks to prevent unwanted intruders and avoid falling accidents -keeping your windows closed when you want them the most secure! Air and a breeze can get in, but not intruders. | FOR USE ON MOST VINYL WINDOWS - These sliding window locks are for use on horizontal sliding windows and most vertical sliding (single hung) windows as a secondary window lock. | PRODUCT INFO - These sliding window locks have a diecast construction with a white painted finish and can fit most vinyl frame rail thicknesses ranging from 1/16 inch to 1/2 inch.
Prime-Line U 9809 Sliding Window Lock for Vinyl Windows - Easy Installation to Keep Windows Securely Closed - Diecast Construction, White (2 Pack)