Arlo Blinds 9/16" Single Cell Blackout Cordless Cellular Shades, Color: White, Size: 40" W x 60" H Each honeycomb shades measures 40 inch wide, not include the mounting hardware width. For inside mount or flush mount, it is recommended that the window must be a minimum 40.25 width or greater. Unique Honeycomb blinds construction offers insulation and sound absorbtion Each cordless cellular shades blinds comes with a matching pvc headrail and bottom rail. Room darkening blackout shades offer excellent insulation problems and the block out the light. Cleaning recommendation: Use a small cloth, feather duster, or vacuum using the soft brush attachment. Contact TopBlinds, if you need help or have questions, email us CS@TopBlinds.com.