Step 1 – First, using a metal tape measure, measure across the top of the window, the middle, and the bottom. For outside mount please add 10 cm to the biggest width dimension to minimize light leakage.

Step 2 – Then, do the same for the drop — measuring from the top of the recess down to the bottom of the window sill. The overlap at the bottom of the blind is a matter of personal choice but please take into account obstacles such as radiators.

This will be the finished size for the height of the blind.

Use the width measure and the finished height of the blind measure when placing your order on our website.

If you have a window frame around the window, please take this into account and adjust the width accordingly.

If in doubt, please contact us for guidance.