Biltek Cordless Blackout Window Shades - 21 x 72 Inch White Spring Lift Window Blinds for Home & Office - Perfect for Bedrooms, Nurseries, and Media Rooms

***Biltek Blackout Roller Shades Cordless Design Fabric Blinds and Shades for Window and Door, Home and Office******Features:***-***Blackout: ***This window shade can block sunlight and harmful UV-***Spring System***: Built-in spring system, automatic lifting-***Easy Installation and Maintenance***: 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-***Double-Sided White Coating***: The front and back of the shade have a white foam coating. This design makes the light blocking and temperature control better- ***Cordless Design: ***Safe cordless design for child and pet safety. Also makes raising and lowering the shades simple and easy.Please measure the size of your window before you place an order ***Measurement Suggestions:***Inside Mount: This installation will still let light in from the top and side edges. But if you want 100% blackout, please choose outside mount instead-Width: W(shade) = W(window) - 0.4 inch-Height: 0 -Depth: D(window) > 3 inchOutside Mount: This installation will 100% block light.-Width: W(shade) = W(window) + 4 inch(or more)-Height: 0

★Inside Mount--For inside mount,it will still let light in from the top and the side.Width: W(shade) need 0.4 inch less than W(window), Depth：D(window) need longer than 3 inch, Height: Suitable for Windows less than 72 inches.

★Outside Mount--For outside Mount, it will 100% block light. Width: W(shade) need 4 inch longer than W(window), Height: Suitable for Windows less than 72 inches.

★The color on the back is White - White coating blocks sunlight effectively, Can shield UV and sunlight in summer and block the cold air in winter.

★Safety Cordless Design - Built-in spring system, automatic lifting. Safe for Children and Pets.

★Easy to Install and Maintain--All mounting brackets are included.You can wipe the fabric pleated shade with clean wet cloth to keep it new and clean.