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VELUX offers a range of products and accessories with the objective of deterring entrance through the roof window beyond the general safety level.
With the opening restrictor, an easy-to-fit safety catch, you can regulate the extent to which your VELUX roof window opens, which is very handy if you e.g. want to make ensure that no one accidentally fall out of the window.
With the restrictor in place, the window is still capable of being opened to provide you with ventilation, but if you want to open the window beyond this point and/or release it for cleaning, you need a special key to do so (the ZOZ 011 that you can buy separately).
Please note that this opening restrictor cannot be used on VELUX top-hung roof windows
Extra security comes with this simple lock that reinforces the 'click shut' mechanism at the top of your VELUX roof window. You can fit this lock in the frame yourself. When the safety device is locked, it is not possible to open the sash, but the ventilation function of the window will still work.
Please note that the security lock can't be used on VELUX top-hung roof windows, GPL, GPU, GHL and GHU. To check what type of VELUX roof window you have, you need to have a look at the type sign of the window by opening the sash and have a look at the ventilation flap.
If you have already an opening restrictor (ZOZ 010) installed on to your VELUX roof window, this special key will allow you to release the window for cleaning, and with the restrictor in place the window is still capable of being opened to provide additional ventilation. Key (ZOZ 011) for VELUX opening restrictor (ZOZ 010)