All our blinds are made to measure and measurements should be taken using a steel tape or ruler.
If you require any help please call us or send an email.
Measure the width from A to B at the top and bottom of the recess.
Measure the drop from C to D in several places.
Measure the width from A to B, this will be the blind size and is the exact width on Venetian and Vertical Blinds or bracket to bracket width on Roller Blinds.
Measure your desired drop from C to D.