1. Width - Measure at the top on the inside of window from left to right. Measure to the closest millimetre. We suggest an overlap of 100mm on either side for privacy and light control. Add the overlap measurement to the largest window width measurement and record this measurement as the Width.
2. Height - Measure on the inside of window from top of the reveal to the window sill. Measure to the closest millimetre. We suggest an overlap of 100mm at the top and an additional 100mm at the bottom if required. Add the overlap measurement to the largest window height measurement and record this measurement as the height
