This night vent keep has been designed specifically for use with an older design upvc window that uses cockspur handles as their means of closure. You can use this keep with any of our cockspur window handles and it is so easy to fit! The gently tapered lead-in position helps with the handle to avoid damage to the end of the nose through continual usage.
To fit this night vent keep just open your window and clsoe the handle. Bring the handle back to a position where you want the window to be locked open and then slide the keep down the nose. Just mark the positionsfor the screws and self-tap with a screw driver.