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  • Prime-Line Products U 9819 Sliding Window Security Lock, Economy, Aluminum
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Prime-Line Products U 9819 Sliding Window Security Lock, Economy, Aluminum

4.4 out of 5 stars 10,189 ratings
鶹's Choice highlights highly rated, well-priced products available to ship immediately.
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Purchase options and add-ons

Brand Prime-Line
Special feature Thumbscrew Lock
Lock type Window Lock
Item dimensions L x W x H 13 x 25 x 11 millimeters
Material Aluminum
Recommended uses for product Securing sliding windows
Style Modern
Colour Silver
Number of pieces 4
Finish type Aluminum

About this item

  • Secondary Lock
  • Fits up to 1/8 In. thick rails
  • Allows window to lock in ventilating position
  • Easy to Install

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Product information

Technical Details

Manufacturer ‎Prime-Line Products
Place of Business ‎REDLANDS, CA, 92374 US
Part Number ‎U 9819
Product Dimensions ‎1.27 x 2.54 x 1.11 cm; 63.5 g
Item model number ‎U 9819
Is discontinued by manufacturer ‎No
Size ‎4 Count (Pack of 1)
Colour ‎Silver
Style ‎Modern
Finish ‎Aluminum
Material ‎Aluminum
Shape ‎Rectangular
Item Package Quantity ‎1
Number of Pieces ‎4
Special Features ‎Thumbscrew Lock
Included Components ‎Sliding Window Security Lock
Batteries Included? ‎No
Batteries Required? ‎No
Warranty Description ‎Goods are warranted against manufacturing defects for 1 year. In no case is Prime-Line responsible for user related damage or damage incurred during installation. Warranty is void if products are subjected to abnormal conditions, misapplication or abuse.
Item Weight ‎63.5 g
Country of origin ‎China

Additional Information

ASIN B00BAFIQF0
Customer Reviews
4.4 out of 5 stars 10,189 ratings

4.4 out of 5 stars
鶹 Rank
Date First Available July 4 2013

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Prime-Line Products U 9819 Sliding Window Security Lock, Economy, Aluminum

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From the manufacturer

Category Module_Security
U 9819

Dimensional Line Drawing

primeline logo building
Why Prime-Line?

Founded in 1978, Prime-Line’s mission is to empower national distributors, commercial companies, and individual homeowners with high-quality repair solutions.

  • Repair & Replacement Parts
  • Safety & Security Products
  • For Your Home
  • For Your Business

U-9819 - Defender Security Sliding Window Lock with Thumbscrew

Aluminum, 4-Pack

This is an extruded aluminum lock with steel thumbscrew used on metal horizontal sliding windows. Allows you to lock window in the closed or ventilating position. It can fit up to a 1/8 In. wide rail. Comes in a natural finish.

  • Used to secure sliding window in a closed or ventilating position
  • Thumb turn screw secures lock in place
  • Fits up to 1/8 in. thick rails
  • Extruded aluminum construction
  • Easy to install
  • Used as a secondary lock

FEATURES & BENEFITS

U 9819 Image 1

Secures quickly and easily to your window frame

U 9819 Image 2

Constructed from extruded aluminum

U 9819 Image 3

Facilitates window locking at ventilating position

U 9819 Image 4

Sold in packs of 4

Product description

鶹.ca Product Description

This secondary lock is constructed of aluminum and is used to lock your window in an open, ventilating position. It can fit up to a 1/8 In. wide rail. Comes in a nice natural finish.

From the Manufacturer

This secondary lock is constructed of aluminum and is used to lock your window in an open, ventilating position. It can fit up to a 1/8 In. wide rail. Comes in a nice natural finish.

Top Brand: Prime-Line

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Customer reviews

4.4 out of 5 stars
10,189 global ratings

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Top reviews from Canada

  • D. Langston
    1.0 out of 5 stars Slider opening too small
    Reviewed in Canada on September 12, 2021
    Verified Purchase
    Be careful ordering this product. The opening along which one is meant to insert the device onto the ridge of the window is far to small for my windows. I would like to return these please.
    Helpful
     Report

Top reviews from other countries

Translate all reviews to English
  • Lucas Adriano dos Santos
    5.0 out of 5 stars ѳپ
    Reviewed in Brazil on March 24, 2025
    Verified Purchase
    Produto cumpre o que promete. Muito resistente e com bom acabamento
    Report
  • Rylee
    5.0 out of 5 stars Good Affordable Security Feature
    Reviewed in the United States on June 19, 2025
    Verified Purchase
    I wanted something to lock the windows and these work great. Super heavy duty and they are simple to install. They are also easy to remove if you want to open your window they simply just unscrew.
    Report
  • Oralia Donis
    5.0 out of 5 stars Fácil y seguro
    Reviewed in Mexico on August 17, 2024
    Verified Purchase
    Estuve buscando una solución para asegurar las ventanas pues vivo en un quinto piso y tengo niños y gatos en casa, estos seguros fueron nuestra salvación. Cumplen perfectamente su función y son muy fáciles de instalar.
    Customer image
    Oralia Donis
    5.0 out of 5 stars
    Fácil y seguro

    Reviewed in Mexico on August 17, 2024
    Estuve buscando una solución para asegurar las ventanas pues vivo en un quinto piso y tengo niños y gatos en casa, estos seguros fueron nuestra salvación. Cumplen perfectamente su función y son muy fáciles de instalar.
    Images in this review
    Customer image
    Report
  • Rose
    5.0 out of 5 stars I feel better the windows are secure
    Reviewed in the United States on October 5, 2024
    Verified Purchase
    The Prime-Line U 9819 Sliding Window Security Lock is a simple yet effective solution for securing sliding windows. I’ve installed these on several windows in my home, and they provide an added layer of security without the need for complicated hardware.

    Pros:

    Easy to install: Installation is straightforward and requires no tools. You just tighten the screw by hand to secure the lock in place.
    Sturdy and secure: Once in place, these locks hold firmly and prevent the window from being opened. It’s a great deterrent for intruders.
    Adjustable fit: The lock fits most standard sliding windows, whether aluminum or vinyl frames, making it versatile for different window types.
    Compact design: The small size of the lock means it doesn’t interfere with the appearance of the window or obstruct the view.
    Cons:

    Requires manual adjustment: You need to manually loosen and tighten the lock each time you want to open or close the window, which might be inconvenient for some.
    Overall, the Prime-Line U 9819 Sliding Window Security Lock is a great, budget-friendly option to increase window security. It’s durable, easy to use, and provides peace of mind knowing that your windows are more secure. Highly recommend it!
    Report
  • The A Lopez
    5.0 out of 5 stars FUNCIONAN!
    Reviewed in Mexico on January 17, 2024
    Verified Purchase
    Tenía mis dudas pero funcionan muy bien, ojo, no es para todas las puertas/ventanas, pero funcionan a la perfección.
    Report

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