Measure the window height and find an appropriate install height using the chart below. Mark the height on the window with your pencil.
Window Height
Install Height
<600mm
200mm
600-800mm
300mm
>800mm
400mm
Use the plastic template in the packet and align the top of the template with the install height mark.
Mark and then pre-drill the holes to go in the frame and sash.
Drill 2 x 3.2mm holes into your frame and 2 x 3.2mm holes into sash.
Screw the hook to the sash using the screws provided. Then screw the base assembly to the frame of the window. Connect the two together and place the cover plate on.
If your window is wider than 500mm you will need a Securistay on either side of the window. Repeat the above process, checking both stays are aligned.
Open and shut the window to check everything is working properly.
