- Before you begin, ensure there is a clearance of 25mm from the rubber beading to any obstructions to allow enough room for the Perfect Fit.
- Measure the width and the drop of your glass size accurately with a measuring tape. Do NOT include the rubber beading. We recommend that you measure in both corners and the middle of your window and use the smallest size taken.
- Measure the depth of the window. Do this by taking a credit card and placing it over the corner of the frame and measure. This gives you the measurement from the face of the window frame to the glass (this is normally 18mm/20mm/22mm/24mm/30mm) and will determine the size of the window fixing brackets to be used.
Find our measuring guides on our Measure & Fit page.