Fenestrelle Expandable Window Screen, 2 Way Adjustable, Horizontal (38cm H x 53cm-101cm W) or Convert to Vertical (53cm H x 38cm-71cm W), Insect Fly Screen for Windows, 2 Pack of Medium Screens

This product has made a world of difference to us living beside a field used for grazing cattle. The product is ideal for sliding sash windows and really cuts down the number of flies which are able to get into the house. It does not prevent flies getting in completely as there is still a small gap between the inner and outer sliding sash when the window is open which is inevitable and no fault of the fly screen. It's just the way sliding sash windows are. I've spent several hundred pounds on these screens and consider them to be a good investment.

These screens fit perfectly into my old sash windows to give me cool breezes with no flies or insects. The pack of two is perfect for having two windows open at the same time for fresh air on hot days and nights. They're really well made and stay securely with no worry of them falling out.

Got these as they should have fit my windows, sadly they didn't. It's a shame because they looked really good quality. Returned for refund.

Did exactly what we expected it to do! Fit in our sash windows and was a lifesaver on hot nights. Well packaged with instructions and an Allen key to change the orientation if needed. Seems sturdy. Very good value for money. Aiming to get another two.

Perfect for sash windows. Keeps almost all insects out, certainly flies, wasps, bees, moths etc. I did think they would last at the most a week with my son and daughter, but 6 months in and they are still going strong. They are very easy to fit, just open the window, slide in the screen, adjust to the windows width and gently close the sash against the frame. Takes about 10 seconds

The product does the job but for what it is is over priced.

Very easy to install and work well. I like that I can remove them when not needed without leaving fixtures in window frame. Great product. Wish they cane in other sizes.

I have an irrational hatred for flies, and these are perfect. The fact that you can adjust them to be horizontal or vertical is perfect. The instructions and tools needed to turn them vertical come with the parcel. Once you figure out how to put the puzzle back together, they easily get the job done. And they keep those flies out, and everything else!