The basic measurements we require to provide a quote is the recess measurements of the window, door or opening that you are looking to dress. If you measure the width at 3 points (top, middle & bottom) and the drop at 3 points (left, centre & right), we will do the rest for you. If you are looking to dress more than the recess, such as floor to ceiling curtains, we require the drop again at 3 points (left, centre & right)