--- product_id: 3743406 title: "Prime-Line U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – Diecast Construction, White (2 Pack)" brand: "defender security" price: "€ 23.83" currency: EUR in_stock: true reviews_count: 11 category: "Defender Security" url: https://www.desertcart.be/products/3743406-prime-line-u-9809-sliding-window-lock-for-vinyl-windows store_origin: BE region: Belgium --- # Secure locking with cam lever Adjustable jaw fits 1/16"–1/2" vinyl rails Tool-free, quick installation Prime-Line U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – Diecast Construction, White (2 Pack) **Brand:** defender security **Price:** € 23.83 **Availability:** ✅ In Stock ## Summary > 🔐 Lock in peace of mind, unlock your freedom to breathe easy! ## Quick Answers - **What is this?** Prime-Line U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – Diecast Construction, White (2 Pack) by defender security - **How much does it cost?** € 23.83 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/3743406-prime-line-u-9809-sliding-window-lock-for-vinyl-windows) ## Best For - defender security enthusiasts ## Why This Product - Trusted defender security brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable Diecast Construction:** Built to last with a sleek white finish that blends seamlessly with vinyl windows - • **Ventilation Mode with Safety:** Lock windows partially open for fresh air without compromising security - • **Effortless No-Tool Installation:** Get your windows locked down in minutes, no handyman needed - • **Versatile Fit for Most Vinyl Windows:** Compatible with horizontal sliding and many single-hung windows for broad usability - • **Vise-Like Grip for Ultimate Security:** Adjustable jaw clamps firmly without damaging vinyl frames ## Overview The Prime-Line U 9809 Sliding Window Lock offers a robust, adjustable locking solution designed specifically for vinyl windows. Featuring a diecast body with a white finish, it fits vinyl frame rails from 1/16 to 1/2 inch thick and installs easily without tools. Its cam-style lever and vise-like grip secure windows firmly while allowing partial ventilation, enhancing home security and safety. Ideal as a secondary lock, it prevents intrusions and accidental falls, making it a must-have for millennial professionals seeking smart, reliable home protection. ## Description Product Description Keep your windows securely closed and safe with these U 9809 Sliding Window Locks for Vinyl Windows. The locks feature an adjustable jaw that has a “vise-like” grip, and they are capable of opening up to 1/2 inch wide. Use them to prevent unwanted intruders from breaking into windows. These locks are designed for use on horizontal vinyl sliding windows, although they may also work with some vertical sliding (single hung) windows. Installation is quick and easy with no tools required – a more secure window is just minutes away! When installing this lock, the cam style locking lever should be rotated hand-tight over the rail or vinyl edge to a sufficient torque prior to locking down the lever. This lock can be adjusted to fit on rail thicknesses ranging from 1/16 inch to 1/2 inch thick. This sliding window lock can be used as a secondary lock when window is shut and to secure the windows during ventilation. For a larger version of this lock (used on vinyl frame patio sliding doors) see model number U 10547. From the Manufacturer This sliding window lock is constructed of diecast and comes in a white painted finish. This lock is DESIGNED FOR USE ON HORIZONTAL VINYL SLIDING WINDOWS, yet it may also work with some vertical sliding (single hung) windows, depending upon the type of vinyl liners and balances used to construct the windows. Note: These locks will fit most all horizontal vinyl sliding windows and some vertical sliding windows, but not all of them. These locks feature an adjustable jaw that has a “vise-like” grip, and they are capable of opening up to 1/2 in. wide for a secure, non-marring hold on thick vinyl rails. When installing this lock, the cam style locking lever should be rotated hand-tight over the rail or vinyl edge to a sufficient torque prior to locking down the lever. This lock can be adjusted to fit on rail thicknesses ranging from 1/16 in. to 1/2 in. thick. This lock can be used as a secondary lock when window is shut and to secure the windows during ventilation. For a larger version of this lock (used on vinyl frame patio sliding doors) see model number U 10547. No tools are required for installation. Review: Great Window Locks – Peace of Mind (and Dog-Approved Durability)! - These window locks have definitely earned my anxiety’s seal of approval! They work incredibly well and bring me that extra bit of security I was looking for. Ignore the scratches in my pictures—one of them fell off, and my dog (she decided it was her new chew toy) went to town on it. Thankfully, they’ve held up great despite the “extra testing.” They’re super easy to twist on and off, making it simple to open and close the windows. The only slight annoyance? You do have to twist them all the way to adjust the window, which makes sense for security, but can be a bit of a pain when you just want a quick crack of fresh air after overcooking something! One bonus I appreciate is that they’re just tricky enough to keep my child puzzled, which adds that extra layer of peace of mind. I’ve got these on all our windows, and I’d highly recommend them to anyone needing a little extra home security (or pet durability)! Review: Worked great for new Jeld-wen single hung vinyl windows - Perfect fit for new Jeld-wen single hung vinyl windows. Curved part fit perfectly in the top unmoveable pane groove on each side! Very satisfied. Use 2 per window, ie 1 pack has 2 included. ## Features - NOTE: Not intended for a patio door, windows only. - EACH PACK INCLUDES – (1) Adjustable jaw that fits all vinyl frame rail thicknesses from 1/16 inch up to 1/2 inch 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 U 9809 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 1/2 inch 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 not 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 inch to 1/2 inch. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005H3N43K | | Additional Features | Adjustable | | Best Sellers Rank | #31,266 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #37 in Window Locks & Latches | | Brand Name | Defender Security | | Color | White | | Customer Reviews | 4.4 4.4 out of 5 stars (4,577) | | Finish Types | White | | Global Trade Identification Number | 00049793098092 | | Included Components | Window lock | | Item Dimensions | 1.19 x 1 x 20 inches | | Item Type Name | Sash Lock | | Item Weight | 0.28 Pounds | | Manufacturer | Prime-Line Products (Home Improvement) | | Manufacturer Warranty Description | Goods are warranted against manufacturing defects for 1 year. | | Material Type | Diecast | | Model Number | U 9809 | | Shape | shape | | Style Name | Sliding Window Lock | | UPC | 049793098092 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Defender Security - **Item dimensions L x W x H:** 1.19 x 1 x 20 inches - **Material:** Diecast - **Special Feature:** Adjustable - **Style:** Sliding Window Lock ## Images ![Prime-Line U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – Diecast Construction, White (2 Pack) - Image 1](https://m.media-amazon.com/images/I/51XK1yv-zRL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Can I use this product in sliding doors?** A: U 10547 is the door version of this item **Q: How does it work? Are you going to post any pictures of it in use?** A: They work great. Seems like it would be easier to break a window than to try to force a window that is locked with two of these. Simply twist them until they begin to tighten to window frame, then clamp them down. They tighten the rest of the way when you clamp them, a lot like vise grip pliers. I'm adding two photos to help. **Q: does this come with 2 pcs in a pack? or this is only fr 1 unit?** A: Luckily, I saved a packaged pack for back-up. The USB on it says 0 49793 09809 2, and it is indeed a 2-pc packet (which states "Fits 1" wide rail"). The cam locking mechanism also makes re-placing the lock easy. **Q: is this somthing that can keep my 6yr old from the window all the way or could it be easly removed by him** A: That seems like a loaded question. When I was 4, I figured out how to put a kitchen chair next to the counter. Climb on the counter and hoist myself to the top shelf of the cupboard to retrieve a bottle of Flintstones vitamins. I subsequently ate the whole bottle and had to have my stomach pumped. Kids are smart. Nothing is completely kidproof. Having said that, it depends on the type of window. Does it slide left to right or up and down? Mine slide up and down, and a child would have to be tall enough to reach high enough to unlatch them. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Window Locks – Peace of Mind (and Dog-Approved Durability)! *by K***E on October 31, 2024* These window locks have definitely earned my anxiety’s seal of approval! They work incredibly well and bring me that extra bit of security I was looking for. Ignore the scratches in my pictures—one of them fell off, and my dog (she decided it was her new chew toy) went to town on it. Thankfully, they’ve held up great despite the “extra testing.” They’re super easy to twist on and off, making it simple to open and close the windows. The only slight annoyance? You do have to twist them all the way to adjust the window, which makes sense for security, but can be a bit of a pain when you just want a quick crack of fresh air after overcooking something! One bonus I appreciate is that they’re just tricky enough to keep my child puzzled, which adds that extra layer of peace of mind. I’ve got these on all our windows, and I’d highly recommend them to anyone needing a little extra home security (or pet durability)! ### ⭐⭐⭐⭐⭐ Worked great for new Jeld-wen single hung vinyl windows *by K***R on March 10, 2026* Perfect fit for new Jeld-wen single hung vinyl windows. Curved part fit perfectly in the top unmoveable pane groove on each side! Very satisfied. Use 2 per window, ie 1 pack has 2 included. ### ⭐⭐⭐⭐ Work well. Not perfect security but solid peace of mind. *by R***0 on September 1, 2025* You'd hear someone trying to get in with these installed. The latch allows for quick removal in an emergency unlike some of the others that require a hex tool. ## Frequently Bought Together - Prime-Line U 9809 Sliding Window Lock for Vinyl Windows – Easy Installation to Keep Windows Securely Closed – Diecast Construction, White (2 Pack) - Toddleroo by North States Sliding Window & Door Wedge Locks | Limits The Space That Windows and Sliding Doors can Open | No Tools Required | Baby proofing with Confidence (4-Pack, White) - Window Locks, 4 Sets Sliding Security Window Lock with Key for Vertical & Horizontal Sliding Windows & Sliding Doors, Adjustable Window Locks Security Window Stoppers for Patio Bedroom Home and Office --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/3743406-prime-line-u-9809-sliding-window-lock-for-vinyl-windows](https://www.desertcart.be/products/3743406-prime-line-u-9809-sliding-window-lock-for-vinyl-windows) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-04-22*