Measuring for Inside Mount
STEP 1: Measure the inside width the top of the window opening (where you will mount the shade). We will make the necessary deductions (approx. 1/8").
STEP 2: Measure the height at 3 locations - the left side, middle and right side. Record the largest of the 3 measurements. This is your ordering height.
NOTE: Roller shade fabrics will be approximately 1-1/2 inches narrower than your ordering width to allow for brackets. If concerned over resulting light gap please select outside mount.
Measuring for Outside Mount
STEP 1: Measure the width of the area you wish to cover. If space allows we recommend adding 2-3" (1-1 1/2" each side) to this measurement to help eliminate light seepage. This is your ordering width and will be the overall measurement of the blind.
STEP 2: Measure the height of the area you wish to cover. This is your ordering height. Be sure to take into account the flat mounting surface needed (see above) when measuring the area you want to cover with your shade. The factory will make your shade (including the roller at the top or the cassette valance, if ordered) to the height ordered. Generally 3" - 4" added to the height of your opening (including molding or framework you wish to cover) will allow you room to mount above the window frame.
NOTE: Your shade material will be made 1-1/2 inches narrower than the measurement you provide to allow for brackets. If you need your shade to cover a specific width (e.g. for mounting a shade on a door) add 1-1/2 inches to your ordered width for the desire fabric width.