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VELUX Security and locks

VELUX offers a range of products and accessories with the objective of deterring entrance through the roof window beyond the general safety level.


Opening restrictor (ZOZ 010K)

  • Opening restrictor for GGL/GGU centre-pivot roof windows
  • Easy to fit safety catch
  • Cannot be used on VELUX top-hung windows GPL, GPU, GHL and GHU

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


Key for opening restrictor (ZOZ 011)

  • Key (ZOZ 011) for VELUX opening restrictor (ZOZ 010)

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)


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