Measure the exact width (left to right) of the inside edge of the window frame in three places (top, middle and bottom).
Take the smallest of the three measurements.
Write down that size making sure that it is the first number of the measurement. This is the width you will order.
*Headrail will be made 1/4" less than width ordered, including endcaps. Fabric will be made 3/8 inch less than width ordered.
Height
Measure the exact height (top to bottom) from the top inside edge down to the window sill in three places.
Take the largest of the three measurements.
Write down that size making sure that it is the second number of the measurement. This is the height you will order.
*width and length measurements may vary +/- 1/8"
Width
Measure the exact width (left to right) of the wooden or metal window frame or how wide you would like the blind or shade to be.
Make sure to measure wide enough as to cover the entire window and provide maximum light gap coverage. Example: If the window opening is 72", it might be helpful to order 76". This will provide 2" coverage on each side of the window.
There is no rule on the width of blinds other than to make sure that it is wide enough to cover the opening.
Write down that size making sure that it is the first number of the measurement.
Height
Measure the height you would like the blind to be by measuring top to bottom.
We recommend adding about 3 or 4 inches to this number to insure maximum light gap coverage and to cover the window completely.
You will want to mount the headrail above the window frame. Please make a note that some windows have trim that might interfere with mounting so it's important to measure above the trim if this is the case.