Use a Metal Measuring Tape (Cloth Tapes May Stretch)
Blinds & shades are mounted inside the window casing.
Width
– Measure in 3 places to the nearest 1/8″
– Order using the shortest measurement
Height
– Measure in 3 places to the nearest 1/8″
– Order using the longest measurement
Blinds & shades are mounted outside the window casing. Eliminates the light gap around windows.
Width & Height
– Measure the exact width and height of the area to be covered
– Add 4″ to both width and height for better light and privacy control
– 2″ for each side as per drawing