Proster Window Locks 8PCS Window Restrictor Locks with 8 Keys and 32 Screws Window Security Locks Window Locks for Public Commercial

I installed them on all 1st & 2nd floor windows. No brainer installation and seem sturdy enough to hold my 5yo hyperactive kid away from the pavement below.

Great for stopping my cats from escaping out the windows

I have used these on all my upstairs windows. One of them was a bit sticky to unlock at first but it freed up after a few twists. Fairly simple to install. I used a small diameter drill to drill a pilot hole for the screws.

Strong locks, easy to install into my upvc double glazed windows. I purchased my own screws of better quality. Size 3.5mm x 25mm stainless steel self taping. Pilot drill hole of 2mm, and everything screwed together nice and tight.

Very fast delivery, very sturdy, no instructions but very simple to figure out and install. Great value for money, would highly recommend

Perfect for my needs

Great product just missing 1 item.Easy to install but 8th lock was missing the white plastics cover, shame as it’s ideal for windows just looks odd now.

Good product

The media could not be loaded.  Super Produkt! Ofnen un schließen geht schwer, sonst top Produkt

Utiliser comme chaînette de sécurité

Hemos instalado este sistema en todas las ventanas de casa para limitar su apertura. Ahora solo abre el cristal unos 12-15 cm aproximadamente. Lo justo para ventilar y estar tranquilos de que nuestra hija pequeña no se puede precipitar a la calle. También queda bloqueada la entrada desde el exterior, lo cual es un plus añadido.

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