Hinge to prevent window being opened other than for ventilation. We suggest gap left for ventilation is no more than 90 mm. for safety reasons with children. Top hung windows should have one each side and side hung one at the bottom.
Easy to fix and supplied with self tapping screws which means no drilling.
This is a fixed restrictor and the window cannot be opened wide without removing fixing screws.
THIS DEVICE MUST NOT BE USED ON ANY WINDOW THAT MAY BE REQUIRED AS A MEANS OF ESCAPE IN CASE OF FIRE ETC.