Sunshieldor Motorized Blackout Roller Shades, Solar Powered Smart Blinds with Valance & Remote Control

•     How to choose the size？

Accurately measure the size of your window according to the measurement map.When choosing blinds, the inside mount needs to be reduced by 1/4 inch, the outside mount need to add 4 inches at least.

• What if the product is broken after Amazon's return period?

  Don't worry, you can always ask us to solve your problem, we will definitely give you a perfect solution.