100% Blackout Cordless Roller Window Shades,Blackout Window 35″W x 72″H White
HOW TO CHOOSE THE SIZE:For example, if your window is 23“ wide and less than 72” high; Inside Installation: blackout shades Width = 23“; blackout shades Height = 72”. Outside Installation: blackout shades Width = 23“ + 4” = 27“; blackout shades Height = 72”.