Material Aluminum Brand Persilux Color Beige (Blackout) Opacity 1 inches Room Type Bedroom About this item ?How to choose a correct size to fit? Example your window meas 23" width by 72" length.?INSIDE MOUNT: window width is blind width, window height is blind height. Blind Width=23"; Blind Height=72". OUTSIDE MOUNT: Plus at least 4" is blind width, plus at least 4" is blind height. Blind Width=23"+4"; Blind Height=72"+4".?Pls Note?Fabric width will be 0.8" shorter than the size of the shade. If your height differs too much from the existing blind height, please choose a custom size. ?Upgraded Aluminum Valance and Bottom Rod? Use fabric-covered cassette valance with a light blocker on the top, this upgraded window covering blocks out more light than a standard window shade, helping you get a better night's sleep. The weighted aluminum bottom rod is wrapped with the same fabric, it makes the fabric is more closer to the window frame and creats a darker room. There are no screws exposed on the sides of cassette and bottom rod to bring your home comfort, grace and style. ?Exclusive Blackout Fabric?This cordless window shade is made of exclusive texture fabric and coated with white 100% blackout backing, excellent in thermal insulation, energy saving, privacy and UV protection. It repels almost 100% of incoming light on one side and add a boost of aesthetic colors and patterns on the other. ?Free-Stop Cordless System?Free-Stop lift technology for quick and accurate control, this new upgraded cordless system allows you to raise and lower the shade with no additional tugging. You can find the perfect position for light illumination or privacy control. It's certified Best for Kids, absent of any cords that could cause potential hazards. ?38mm Roll Tube? Persilux roller blinds use 38mm roller tube instead of 28mm, which offers more sizes option for you selecting. The thickened roller tube provides strong support to the fabric so that the bottom of the fabric is on the same horizontal line and does not tilt.