Reddit reviews Grandekor Blackout Shades Blackout Blinds Cordless Shade Roller Shades for Windows， Window Blackout Shades Roller Blinds Blackout with Spring System White, 36"(W) x 72"(H)

❀100% Blackout: Blinds for windows are made of 100% blackout fabric, back silver coating can block sunlight and harmful UV rays. Due to brackets on the top rail, the fabric width is 1 1/2" shorter than listing width. ★Package provides 3 screws, to install blind only need 2 screws.★❀Spring-loaded Mechanism: These window blinds are operated by spring-loaded mechanism which makes it easier to control up and down of the blackout blinds, also can stop at any height you need.❀Cordless Design: On account of the spring system, these blackout shades eliminate dangling cord hazards, making it an ideal choice for homes with children or pets.❀Inside & Outside Mount: Both inside and outside mount are applicable. For inside mount: Window width should be 1/4 inch wider than the shade width. For outside mount, fabric width should be 6-8" wider than window width for better coverage.❀Perfect solution for: Bedroom, Living room, Kitchen, Bathroom, Children's Rooms and Office. Works as a temporary or permanent solution behind existing window treatments.