Defender Security U 9809 Window Lock, Painted (Pack of 2)

This sliding window lock is constructed of die-cast and comes in a white painted finish. This lock is designed for use on horizontal vinyl sliding windows, yet it may also work with some vertical sliding (single-hung) windows, depending upon the type of vinyl liners and balances used to construct the windows. Note - These locks will fit most all horizontal vinyl sliding windows and some vertical sliding windows, but not all of them. These locks feature an adjustable jaw that has a vise-like grip and they are capable of opening up to 1/2 in W for a secure, non-marring hold on thick vinyl rails. When installing this lock, the cam style locking lever should be rotated hand-tight over the rail or vinyl edge to a sufficient torque prior to locking down the lever. Can be adjusted to fit on rail thicknesses ranging from 1/16 to 1/2 in THK. Used as a secondary lock when window is shut and to secure the windows during ventilation. For a larger version of this lock (used on vinyl frame patio sliding doors) see Prime-Line part U-10547. No tools are required for installation.