These locking window restrictors are the ideal solution to security and child-safety on your aluminium, wood or uPVC windows.
Upon opening the window, the opening angle would be restricted depending on how close to the hinge-side you have fitted the restrictor. Restriction is released by means of a key, in the event that you would like to open the window fully.
These are perfect to use on side-hung windows, and top-hung windows - and are best suited in our opinion to uPVC as they can be hidden away in the euro groove within the frame - however they can be surface mounted so there's no issue there.
They can also be used on sash windows, and would in this case restrict the opening to 100mm (10cm) - unlike on hinged windows where you can vary this by placing it closer or further from the hinge side.
These conform to the British Standard BS6375 (Part 2: 1987).
- Written by Jack
Hi, guys. My name's Darrel and I'm head of the tech team here at LocksOnline. Thanks for taking some time to tune in and have a quick look at one of our product review videos. Now we do these short, little videos to be able to give you, our customers, the opportunity to see the products in the flesh, so to speak, and be able to give you a little bit more information than perhaps the stock image, and the descriptive text may give.
Today I want to talk to you about a range of window restrictors. Primarily they're used on UPVC windows but they can actually be used on timber or aluminium framed windows as well. The idea is quite simple. You have two pieces, you have the piece that sits on the window here as you can see. This has got a little knuckle on it. Now this size here is a standard industry 16 millimetres. I'll get some measurements on that in a second for you. And the idea is quite simple, when you put your key in here, this will be situated in the groove in the frame, and that allows you to push that in there like that, that allows you to sit that in like that. Now this is the part that's going to be on the window or it could be on the window that way. It depends on whether you've got a casement or whether or not you've got a fan-like type window. And the idea is that sits in there like that, that can slide up there like that, and the key can be pulled out there like that and now that window isn't going to open more than that restrictor will allow.
Now depending on where you sit this, will depend on how far the window will be able to open. So the closer to the leading edge that you've got then the shorter the window will open and, of course, the further up on the pivot or the further in on the casement might be then, of course, then the end of the window can open that little bit more. Hopefully I'm explaining myself a little bit better there. So the idea is that when the window then closes, this then would allow you to push up like that into the groove of the profile and it would sit then like that. So as you open the window that would operate like that and I'm hoping that's explaining a little bit better to you than perhaps I am making the visual interpretation there can show it to you a little bit better.
So what it also has is an auto-lock feature. Therefore, if there was a situation where the actual key wasn't there and it was in the open position, then effectively what would happen is when the window closes back in, that's going to push itself into this position here and as it closes this little knuckle here forces this bar up and actually closes it and locks it back into position like that. Did you get that on the video there? And that explains then that it's got that auto-locking feature. Now of course now it's back locked again.
Now they come in two different hands, there's left hand and right hand, depending on the application for you, or by all means, just call us, you might just have one on the bottom of the casement, because this will actually sit at the bottom of a window depending again on the handing for your particular application.
If you need a bit more information on this or any of the products that we have, by all means, pop us over an email, use the live chat, or simply do it the old-fashioned way and pick up the phone and give us a call. Either way, we'd love to hear from you, and more importantly, we'd love to see you as a customer. And just to quickly mention, you need to consider some fixing screws for these. So from me, Darrel, and all of us at the team, take care and we'll catch up with you real soon. Bye-bye.