cellular shade sizes come as stated — no deduction is made. For the best fit, measure the width across the top, middle, and bottom of your window. Note that inside mounts require a window opening 1/8–1 inch wider than the blind and 5/8 inch of flat mounting space. This allows proper fit with minimal light gaps. This cordless cellular honeycomb shade uses a 3/8" single-cell design to filter light, enhance privacy, and boost energy efficiency by insulating windows through trapped air within the cells. The cordless lift system ensures safe, smooth, and easy operation, making these shades ideal for bedrooms, bathrooms, kitchens, and offices. Finished in crisp white, they combine modern style with everyday practicality for long-lasting performance.