Cellular Shades offer numerous light filtering and room darkening options. Also known as Duettes, Honeycomb Shades, Accordion Shades. They are one of the best insulating coverings you can buy. Always white on the back – you can use any color inside and have white to the outside (matching blinds in other rooms). Cell (Honeycomb, Duets, and According) shades also offer a “Top Down” option that is perfect for bedrooms (allowing light in while still offering privacy).