VELUX ZOZ 010K S011 Opening Restrictor with Key

The VELUX opening restrictor is perfect for that extra bit of security for a childrens bedroom, or a room where restricted ventilation is needed. It is suitable for centre-pivot roof windows only. The restrictor comes with a key and is that little bit of extra security that comes with a simple lock that re-enforces the `click shut` mechanism at the top of your Velux or RoofLITE roof window. The opening restrictor is suitable for GGL/GGU roof windows only and roof windows of frame height 98cm or above.