Roller shades blackout blinds are a stylish way to reduce glare and furniture-fading ray. Choose them when you’re looking for style limited privacy. They will keep your room cool and comfortable without feeling boxed in. Example of choosing the right size: To make sure to cover the entire window, outside mount roller shades Blackout need to be 4 inches wider than windows wide. If your windows width is 30", order size 34" would be okay for outside mount?If your windows are 30" wide, order 30" or slightly less for internal installation. Don't worry window blinds height,it can adjust from 0" to 72". ?Pls Note??Fabric width will be 1" narrower than the size of the shade. Features: Roller shades blackout ability to cut the glare makes them the ideal choice for media rooms, studies or any sun-facing room where light control is desired. These window treatments protect furniture from harmful ultraviolet (UV) rays, diffuse light and help control heat gain. Cordless Lift: This popular option provides a hidden control system that eliminates the lift cord on your roller shades blackout and enables them to be easily raised or lowered with the touch of a finger. 100% Opacity: UV Blockage 100% Blackout shades for complete privacy. Perfect for media room, studio, office, living room,glass door bathroom,bedroom.