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Defender Security U 9802 Sliding Window Lock for Vinyl Windows

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Easy installation to keep windows securely closed - White Diecast Construction (Pack of 2) Defender Security U 9809 Sliding Window Lock for Vinyl Windows.

EACH PACK INCLUDES – (2)Adjustable jaw that fits all vinyl frame rail thicknesses from 1/16" up to 1/2" 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 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 ½” 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 no 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” to ½”.


We provide free UPS ground shipping anywhere in the continental United States and $34.99 for Hawaii Alaska and Canada. Our turnaround time is approximately 3 to 5 days.

Customer Reviews

Based on 2 reviews
Chrissy Hotz
Excellent product

Wonderful product and great customer service. Thank you!

Alicia Nguyen

Replaced a cheaper, expandable cat door from Amazon with this. This cat door looks 100x better and fits better in the window without drafts. We've had a couple of windy days and I haven't heard the flap going back and forth. Worth the extra money to get a custom fit door!