I made a mistake with the measurements when I ordered, so I took it out of the box once, but it's unused. It's a really great item, so I hope it finds someone with the right size. I will reshape it and reinforce it with recycled materials before shipping. Honeycomb shades with excellent heat insulation and light blocking, easy to install. - Brand: TUISS - Product Name: Honeycomb Shade - Pattern: 82 patterns - Installation Method: Easy installation - Size Unit: Order in 1mm increments - Functions: Heat insulation and light blocking - Seasonal Characteristics: Cool in summer, warm in winter Thank you for looking.