Fenestrelle Expandable Window Screen - Horizontal (38cm H x 53cm-101cm W), Pack of 2 Medium Screens. Keeps Out Bugs. Perfect Replacement Screen for Windows. Insect, Mosquito, Fly Screens for Windows

***Edit** I’m an idiot & didn’t realise they could come apart 🫣 I have now repurchased these & they fit as a single panel!!! I am so pleased, I can open the window more than 1-2 inch & no cat escapes (& no bugs) they feel secure & sturdy! Definitely recommend ! Oh & now they can be content openly judge my parking & neighbours as cats should 😳 Previous purchase: I have to say I’m absolutely gutted I’ve had to return my order, the screen seemed perfect for my needs (keeping our indoor cats in, in warm weather) but sadly, while I measured the width I didn’t think about trying to fit it as it was going to be a tight fit (side bay windows) and while the widest channels were 52cmm I didn’t factor the narrowest point 🫣 I am now back to being secretly judged as I come home…

Amazing item! We originally got a screen which stuck around the frame with magnets but it didn't work as the window slides up. This item however, works very well. It slots into the frame and is very sturdy - even with four curious indoor cats, it has allowed us to have the window open and keep them from escaping! The mesh is strong as well, keeping any creepy crawlies out while letting fresh air in! Brilliant how you get two in the pack as well! Would definitely recommend.

OMG I wish I knew of these sooner. I live in a country cottage with plants beneath the windows. And although I love the fresh air, the amount of flies coming in is ridiculous. This is the perfect solution. Sturdy, easy to use and good value.

If you have sash windows these are fantastic. Simple design, work like a charm. I have 2 sets in different sizes and haven’t had a single fly or bug in the house since. Would one hundred percent recommend.

Perfect fit for what I needed. Slides right into the window and has pest proof bristles on top and bottom for extra security. As I'm renting I didn't want to use velcro or magnets and this does just the trick. Now I'm less worried about spiders falling onto my bed! Although it doesn't say in the specs the mesh measures 1x1mm squares so it'll stop most insects but it's not super fine so there will likely be some micro intruders still.

These window screen are so easy to use. I have had to make my own in the past ( very fiddly) Now I have sash windows it a breeze open the window pop them in and slide to fit, so simple. I will be buying more for some other windows very pleased…..

These are brilliant! Does exactly what it’s meant to for my sash windows and keeps my new kitten safe from falling out. Don’t hesitate, buy now! 10/10

Absolutely amazing, will keep the bugs out and fresh air in lol highly recommended, will definitely be ordering more…. Will be great for summer…