Roller Blinds Manual Blackout Health and Environmental Shades Window Blinds Home & Office ❀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: order width should at least be 1/4 inch shorter than window frame width. For outside mount, order width should 6-8" wider than window frame width for better coverage. ❀Design to: Bedroom, Living room, Kitchen, Bathroom, Children's Rooms and Office. Works as a temporary or permanent solution behind existing window treatments. Sun free Blackout Roller Shades Cordless Design Fabric Blinds and Shades for Window and Door, Home and Office The back of the shade is silver. This design makes the light blocking and temperature control better. *Blackout This window shades can block sunlight and harmful UV. *Spring System Built-in spring system, automatic lifting. The rate of raising can be adjustable. *Easy to Install and Maintain All mounting brackets are included. It can be install by 2 screws, please do not worry if you receive old package 3 screws. *Easy to clean with a cloth or vacuum. *Measure the size of your window Please measure the size of your window before you place an order. *Inside Mount It will still let light in from the top and the side. If you want 100% blackout, please choose outside mount. Outside Mount It will 100% block light please chat us before shipping