20 x White Premium Key Locking Sash Jammers UPVC Window Door Lock Security Guard Arm Blocker with Jack Nuts and Screws

I used these sash jammers on my 2 doors in the conservatory, using the supplied jack nuts. These were far stronger than the previous ones installed. I'd recommend these over cheaper options I've used in the past, having a noticeable improvement in quality, albeit at a higher price.

Extremely solid and reassuringly heavy sash locks. They come with a variety of fittings included for free so if its a metal frame that requires an anchor bolt or metal screws or simply wood screws, this kit has you covered.The kit also contains height adjusters both for the seating of the sash jamber itself however also 3 different size rounded end caps to use on the return side so the mechanism sits flush with your door!There are a few negatives however these do not deserve a star loss, these include the following,;if you are fitting to a door with a flush hinge then you are left with one heck of a gap, this can be rectified by utilising some shaped wood or plastic to raise the door to suite or by cutting into the frame so that the unit is flush so as this can be resolved with some additional work I would not mark it down.They are as the aforementioned states, solid alloy construction and provide excellent peace of mind, especially after my brother and his wife were away on holiday and an attempt to break in occurred it was only these sash jammers that stopped the would be thieves !!!So top marks, just position them wisely, not too close together and preferably at the extremes of the door for maximum protection.The Reviewer

The Jammers are good quality not made from plastic. They come with various fixing so you have a choice of how to fit. No instructions so as usual you tube video. Easy to fit . Note make sure the latch part is fitted so when you open it will open up not down this will give you better security.

Good strong lock. Very easy to fit and does the job perfectly

Good sturdy product let down by poor quality screws. Had to go to B&Q to replace the jack nut screws as the heads are too soft and become useless as you tighten them up. 5x40mm if anyone needs to do the same as myself.The various range of spacers were perfect to find the right fit for my doors.No issues with the keys.

These were delivered in good time.The individual packets contain everything you need including three different types of fittings and various spacers.The Sash Jammer is a good solid weight and feels sturdy and robust .All work great and the keys work perfectly. I have no complaints about this product and highly recommend them.Make sure you fit them at least 6mm from the edge of the window otherwise you won't be able to open your window.

Awesome quality Sash Jammers and definitely worth buying if you want peace of mind. I've bought ten of these so far and I'll be picking up some more in the near future.

Solid, good quality and easy to fit. All keys are the same too so have used them on all the downstairs UPVC windows and doors.