The recess is inside the window opening. Choose this option if you want to the blind to lie in the recess of the window.
Width: Measure the inside width of the window at the top middle and bottom. Use the narrowest width measurement always using a metal tape measure.
Height: Measure the height of the window at the left, centre and right. Use the shortest height measurement always using a metal tape measure.
We will deduct the manufacturers recommended tolerance off the width/drop of the blind to ensure the blind operates perfectly within the window recess.
Outside Recess/Exact is the outside of the window opening, overlapping the window recess. Choose this option if you want the blind to overlap the window recess.
To minimise light leakage it's recommended that the blind overlaps the window recess on the width by least 40mm each side (60mm in the case of vertical blinds).
When measuring the height take into account the required space for the mounting bracket. A flat surface of a minimum 70mm above is required (50mm in the case of vertical blinds). The overlap at the bottom of the blind is a matter of personal choice but please take into account obstacles such as radiators.
If you are unsure please contact us on 01949 845399