
A Blindster exclusive, these blackout cellular shades block 100% of natural light and require no tools to install! These shades have patent-pending mounting brackets with a strong adhesive backing that's been rigorously tested by an Independent Laboratory and approved to provide a secure and long-lasting mount; and no screws means no holes in your window frame! The blackout honeycomb-shaped material has a mylar lining for 100% light blockage and maximum insulaton.
STEP 1: Measure the width of your window opening in 3 places - top, middle and bottom. Record the most narrow of your 3 measurements to the nearest 1/8". If rounding is necessary, round down to the nearest 1/8". This is the width you will order. The factory will deduct approx. 3/8 to 1/2" from the width you order to allow space for proper operation.
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.
STEP 1: Measure the width of the area you want to cover from outside edge to outside edge. This is the width you should order. Including the endcaps, the shade will measure approx. 1/4” wider than the size you specify.
STEP 2: Measure the height of the area you want to cover from outside edge to outside edge. This is the height you should order. There are no height deductions, the shade will be made to the height you order.