Fulton & BrayFB319 Sash Window Stop Restrictor for Child Safety and Security - Comes With Key Included (Polished Brass)

Great product, even better than expected, very high quality can only highly recommend, easy to fit.

these are easy to fit. use a 10mm drill. the quality seems fine.

Theses fittings appear to be an excellent idea . They are simple in construction , and with two pairs of fittings for the top sash you can fit one set to close the sash securely and one set to allow the sash to be open enough for air flow without the danger of someone gaining access or someone from inside falling out of the window. Unfortunately there are no instructions of what size of hole should be drilled into the sash wood where the fittings are to be fitted to. This is critical to the correct fitting into the sash . Too small a hole will cause the wood to split and too large a hole will render the fitting to be loose and the unit will fail in operation . As it is a brilliantly simply solution it is a shame that no instruction as to correct drill bit size was included ! It only takes a piece of paper instruction included to resolve the problem !!

I bought these to limit the amount the window could be opened rather than to stop it opening. With newly rebuilt sash windows, I didn't want to fit the limiters by trial and error and there are no instructions supplied, nor are there any on the manufacturer's website.I phoned Customer Service at the manufacturer and they were very helpful and sent through a diagram of how to fit and a pic of one fitted. There have been a number of other buyers who complained about the lack of instructions, so I have included the info that was sent to me. It would be so much easier if they were supplied with the units or even on the Amazon listing, hence 4 stars for a 5 star product." The small threaded ferrule is fitted to the outer frame of the window by drilling a pilot hole and then screwing the ferrule into position. The hole should be drilled as close to the bottom inner sash as possible to keep the window completely shut for security. In addition, you may wish to fit an additional ferrule at approximately 75mm – 100mm above to allow for the window to be opened slightly for ventilation."

The appearance of this window stop is simple but it looks good. Installation is easy but there are no instructions provided at all. You will need a 10mm drill bit and an Allen key of the right size (sorry I just picked the one I already had that fitted and am not sure if it’s size) to screw the lock into the frame.

Exactly what I was looking for to replace a cheaper version I'd purchased elsewhere. For not much more ££ the quality of these is exceptional. I disagree with the FAQs about the size drill bit you need, anything smaller than an 11mm is definitely too small. Once the hole is big enough they're simple to fit!

Very nice and very solid and well made. Excellent for allowing sashes to be open for air but still secure.Have a practice on a scrap piece of wood first to check if your drill bit size is suitable and you need and Allen key to insert them - I used a hex bit on my battery drill - go slowly!!Recommmed these.

Good quality items. Feel sturdy and well made. Relatively easy to install (depending on the quality of wood in the frame).A useful feature is the dual heights you can set the stops. They allow the window to be locked open or fully locked.