Cardea Solutions Essential Window Cable Restrictor - Suitable for uPVC, Wooden, Metal, and Aluminum Window Frames, Easy Install Child Safety Lock - White (1 Pack)

Bought this because my son was climbing up on the bathroom window sill which has a throw out window and he has figured out how to open it, this is a perfect item to stop any accidents for happening,really easy to fit and feel very strong

Great gadget for keeping your little wannabe superheroes safe.

Very easy to install and very sturdy and felt comfortable about leaving my window open when I go out

Bought several of these over the years. Fitted on nearly every opening window. My daughter has two rescue cats who cannot be allowed out or they would panic and run. Important we keep windows open for comfort in the summer so these solved the problem. Neither the big tom nor the nosey dogs could break them and if mounted as per instructions the gap is big enough for ventilation but too small for cats to slip through. Easy to fit and don't foul the Venetian blinds as the mountings ensure the wire loops down when the window is closed. There are better looking ones on the market but having tried them, they cause problems with the blinds. Still, not ugly or cheap looking, just a bit industrial. Otherwise ideal for my needs. Very happy buyer.

Didn't come with instructions but super easy to work out how to fix to the upvc.Seems sturdy enough so far

About to order 3 more.Perfect to let our cats in and out but stop our brainless pup falling out!Great quality, they look nice and work a treat

Easy to install and secure

The restrictor seems solid and well made. It feels heavy, and it feels tough, which is quite reassuring. I bought this to put on a velux window as my toddler can climb up onto the deep windowsill (not matter how well we try and keep an eye on him), and it won't be long before he can reach the handle at the top, so I've used this to restrict it to about 4 inches.Although the lock is good, the supplied screws are very poor. Extremely poorly formed and as soft as butter. I'd fear those screws would snap long before anything else gave way so I ditched them and used some decent screws that I had laying around and I strongly recommend that you do the same.