The measurements shoul be taken up to mm from one end of the window holder to the other end of the other window holder (see picture), both in width and in height. These are the final dimensions that you have to specify in your order request.
When mounting on a wall or ceiling, measure both height and width from the desired level and spot for positioning the blind.
Note: It is recommended to add at least 5 cm in width on the right and on left side of the window to avoid unwanted clearance.
