Home > Window Locks & Latches > Defender Security U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – White Diecast Construction (Pack of 2)

Defender Security U 9809 Sliding Window Lock for Vinyl Windows

Sliding Window Locks, Vinyl Windows, Horizontal Sliding Windows, A Secondary Window Lock, Defender Security U 9809 Sliding Window Lock, Most Vinyl Frame Rail Thicknesses, All Vinyl Frame Rail, Vinyl Windows Easy Installation

9.1
Created with Raphaël 2.1.29.1010
BVR Rating 125 reviews
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Reason to Buy

  • Built-in adjustable jaws offer adequate fitting on all windows and doors frame
  • Equipped with locks that helps in keeping security and safety
  • Made of high-quality diecast material that makes it long-lasting

Minor Drawbacks

  • Handle may not work properly

Products Similar to Defender Security Window Locks & Latches

Analysis of 100+ reviews for Defender Security U 9809 Sliding Window Lock for Vinyl Windows

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BestViewsReviews analyzed 9,651 reviews for 50 products in the Window Locks & Latches category.

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We analyzed a total of 125 reviews for this product out of which, 106 reviews were received in the last 6 months.

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The analysis indicates that around 69% reviews were positive while around 22% of reviews had negative sentiment.

BestViewsReviews Ranking and Score for Defender Security U 9809 Sliding Window Lock for Vinyl Windows

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This product received a total score of 9.05 out of 10, based on review sentiments and user opinions related to 5 features:

  • Build quality
  • Value for money
  • Safety features
  • Installation
  • Overall satisfaction
  • What users have to say about Defender Security U 9809 Sliding Window Lock for Vinyl Windows


    I have only recently started buying used stuff from Amazon, and so far, I am quite satisfied with them, and saving me some money on things I probably wouldn't have bought new anyways.


    Even if your window isn't working, this is a great product. I needed an additional lock for my window, and this was better than I thought.


    If you want the window open at a certain height, you can move the locks. These are very well made quality locks.


    I was able to lock my window in place with my air conditioning unit in it, which is a great relief, because I feel secure that my windows cannot be opened unless I open them.


    If you flip it over the picture shows, it loosens its grip, which I think is a design error.

    FAQ

    Q:

    Is the product size correct at 1.2 x 1 x 5.4 inches?

    A:

    The dimensions are 1.2 x 1 and 5.4, I don't know where they got them.

    Q:

    My window frame is about 1/3 inches thick, so can someone tell me how to fix it?

    A:

    Yes. It should work.

    Q:

    Is it possible to adjust these so you can either open the window all the way or open to window to whatever width you want?

    A:

    I keep mine so that I can open the window a few inches, but if I want to open it fully, I would just slide it back and forth when I want to close it.

    Q:

    Is it possible to use it in windows with an aluminum frame?

    A:

    The tack depth on some aluminum frames is too shallow to accommodate the housing depth, so this item can be used on an aluminum frame.

    Q:

    Does it keep the outside window locked and the inside window open?

    A:

    The top can still open if the bottom is locked, but I use Anderson windows that have a built-in lock to keep the windows less than a few inches.

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