Measure the width of the window recess in at least three places where you would like to install your blind. (Take these measurements at the depth you would like to install your blinds.) You will use the smallest of these figures as your width measurement when ordering your blind.
Important!
Check your depth – To allow sufficient room for your blind to operate, it’s important that there is sufficient depth clearance between the farthest point of any obstruction and the front of the recess. The required depth clearance for top-fixed brackets is 55mm; the required depth clearance for face-fixed brackets is 75mm.
Check for any width obstructions – Any obstructions in your recess (tiles, etc.) may reduce its effective width. Find the effective width by measuring between these points. Use this figure as your width measurement when ordering your blind.