Color: Seashell Material: Polyester Cordless Window Treatments Lined 1-year Limited Warranty INSIDE mount: measure your window horizontally with a steel tape measure in three places; top, middle, and bottom, use the smallest measurement, round down to the nearest half inch available. Your shade will arrive with an 1/4" deduction. OUTSIDE mount: Measure your window horizontally with a steel tape measure Designed by Linen Avenue, the Linen Avenue Cordless Cellular Light Filtering Shade, 68 W x 84 H, Seashell is built for lasting quality and everyday use. Shop at OJCommerce and explore our collection with free shipping on every order.