About This Window Treatment The Classic Blackout Roller Shade provides complete privacy, blocking 99% of light that enters a room. Available in a variety of base colors, the Classic Roller Shades is sure to match any existing interior design style. Note: To ensure proper operation, the fabric of the shade delivered to your door will be up to 1½" inches narrower than the actual ordered width, as light seepage on both sides of the shade is essential to the design of roller shades. If you are looking to avoid light seepage, consider ordering the shade as an outside mount.