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The Defender Security U 9858 Sliding Patio Door Lock Pins are designed to lock a sliding door into closed or ventilating position, and they operate with a simple insertion of their pins into a retaining ring to help prevent unwanted sliding of a door panel. Each lock is constructed of hardened steel pins that protrude past the inner door panel and extend into the secondary panel to lock an active door into place. A pin holder bracket is also included for easy storage when not in use. These locks help to prevent prying and lifting of the active panels, significantly reducing the chances of entry from the outside, and they can also be used on both vertical and horizontal sliding windows. Installation hardware and instructions are included, and they can be installed with a few simple tools.
From the Manufacturer
This locking pin is constructed from case-hardened steel and comes plated in chrome. The pin stores in its holder when unlocked and locks into the retaining ring when engaged. Securely locks your door in a closed or ventilating position.
Paz
Reviewed in the United States on March 6, 2025
Great idea. The rods are too short. Had to make my own.
Antonio Boscan
Reviewed in the United States on March 18, 2025
Good product
Carey
Reviewed in the United States on March 18, 2025
No issues, works as intended.
Heriberto Navarro Jr
Reviewed in the United States on September 24, 2024
I like this product due to its lock assuredness and used this product for house security. Thank you.
Ian Bryan
Reviewed in the United States on September 13, 2024
Its doing what I bought it for, keep the slider closed. The chain is a weak link (pun intended) and snapped probably the first week I had it...which doesnt really change its functionality but the pin can now drop the floor if its not attached.
Danny Pritchard
Reviewed in the United States on August 8, 2024
Wonderful inexpensive tool for sliding glass doors 🚪
John Finlay
Reviewed in Canada on August 18, 2024
Good priced unit and easy to install. Nice addition to the house security.
Amy Kelly
Reviewed in the United States on July 8, 2024
I am inlove with this lock, if you have little ones this is what you need. My son has figured out how to open our sliding glass door, so let me tell you this is the best of the best. Easy to install, it fits perfect and it’s very durable, I would give it 10/10 for performance
Greywolf
Reviewed in the United States on July 11, 2024
Pretty easy install on my sliding glass door. The 1/16” drill for the accessories mount is a joke. Gotta go bigger than that in order to screw the included screw in. Other than that all is great. Good lock easy install and no worries opening the door. Loki’s nice also.
Peter Jackson
Reviewed in Canada on March 25, 2024
It's easy to install, easy to use, not noticeable and it works!
Annie
Reviewed in Australia on November 15, 2024
Inexpensive and easy to fit.
George W
Reviewed in Canada on November 12, 2024
It'll probably do the job. It's definitely not a heavy duty product, but is sufficient. The metal holder especially might be prone to rusting if placed in a moist environment. The shaft is thin but probably to makes it easy to drill the required hole.
Jose A. Casazza Murillo
Reviewed in Mexico on September 20, 2020
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