Model # U 9850

Internet #100130527

Store SKU #633172

Store SO SKU #633172

Prime-Line White Twist-in Sliding Patio Door Lock


White Twist-in Sliding Patio Door Lock

$5.25 /each

Frequently Bought Together

Product Overview

The Defender Security White Twist-In Sliding Patio Door Lock is designed to prevent the sliding and lifting of your patio door. The bolt can be locked securely in closed or ventilating position.

  • Helps prevent sliding and lifting of door
  • Can locks door in closed or ventilating position
  • Zamac-cast housing with a white finish
  • Bolt locks into 1/4 in. hole drilled into fixed-panel rail with twist-in action

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

Can it be used on vinyl doors

Asked by: Mark
Thank you for your inquiry regarding this item from Prime-Line Products. Yes, this item can be used on patio sliding doors constructed of vinyl. For additional questions regarding this item, or any other product manufactured by Prime-Line Products, please call their toll free number at (877) 649-9740, or contact them by email at
Answered by: primelineProductExpert
Date published: 2016-06-10
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Customer Reviews

White Twist-in Sliding Patio Door Lock is rated 4.5 out of 5 by 8.
Rated 4 out of 5 by from Easy to install. ... Easy to install.
Date published: 2017-03-07
Rated 4 out of 5 by from Patio Door Lock I purchased one of these a few months ago and it held up for exactly 2 days before the bolt snapped in half. I am going to give it one more try
Date published: 2016-07-05
Rated 5 out of 5 by from Easy to install, secre! I picked up this product from the store. Very easy to install. Instructions were clear. Very easy fix for my security issue! I have an unusual set of doors with the 4 panels. The 2 outboard (for lack of a better word) are inside mounted sliding doors; the two inboard doors are outside mounted doors. The instructions had a simple solution to secure all 4 doors with 2 locks. Love this product!!
Date published: 2014-04-26
Rated 5 out of 5 by from door lock I knew I would find what I needed at The Home Depot!!
Date published: 2016-03-29
Rated 5 out of 5 by from Excellent inexpensive security device This little device secure the sliding doors in a manner that is practically impossible to open. It is easy to install with a drill and screwdriver, It is inconspicuous is you place it in the lower area. I placed it on 4 consecutive sliding doors and the only way to enter to the house is by breaking the glass ( too much noise!!) or lifting all the 4 doors at the same time( if someone have that strength????). It is worth the money pay.
Date published: 2015-07-28
Rated 4 out of 5 by from They met our needs. We purchased these to use as improvised window locks. They worked great, although we did have to buy longer screws for a secure installation.
Date published: 2013-02-28
Rated 4 out of 5 by from Solid Lock This lock is not your everyday slim picking lock. My misfortune is that it is a little too big for my cheap door. Otherwise a great buy for the price.
Date published: 2015-06-30
Rated 5 out of 5 by from Door lock Good product. Easy to install and it's simple but effective.
Date published: 2015-03-31
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