This list is for the blackout white cellular shades (check my other lists for different options). These are top-quality cellular shades. The honeycomb material and hardware are made by one of the best roller shade manufacturers. The solid aluminum alloy headrail and bottom weight bar with a newly developed upgraded spring tension makes it possible to construct the cellular shade up to 120" wide and still move up and down with smooth motion. We challenge you to compare them with others. If you are familiar with cellular shades, you can probably tell from the listed pictures that these shades are made from superior materials and crafted with excellent workmanship. The blackout shade completely blocks 100% of the light, making it feel like a wall is blocking all light. These shades are ready-made and overstock items, offering deeply discounted prices. Quantities and size choices are limited. However, we offer Cut-to-Size service with additional cost. With our Cut-to-Size service, we tailor any of our deeply discounted, ready-made, over stocked shades or screens to fit your exact measurements. For a minimal additional cost, you can still achieve a perfectly fitting window covering at a bargain price. For example, if you need 35-1/8” wide by 64” high, but the closest available ready-made size is 39” wide by 64” high, simply purchase this Cut-to-Size Service along with the shade. Specify your exact dimensions—35-1/8” wide by 64” high—when ordering, and we will precisely trim the ready-made shade from 39” wide by 64” high to 35-1/8” wide by 64” high to fit your window. Click the link to purchase the Cut-to-Size service, or search my eBay store using the words " Cut-to-Size service". Features: The special honeycomb structure offers features such as energy saving, thermal insulation, and noise reduction.The headrail and bottom rod are both made of aluminum, providing weight and rigidity so the blinds hang flat and are resistant to wind. The headrail and bottom rod are color-matched with the fabric, making the blinds look clean and comfortable. Installation brackets and an instruction are provided for quick and easy inside or outside mounting. Newly upgraded spring system has passed 10,000 cycles of lifting and pulling down tests for each blind. This system makes it easy to raise and lower the blinds evenly every time and keeps them balanced automatically. The blinds retract and extend smoothly with a little lift or pull. Note: The quantity and sizes available are limited due to inventory control. If you need a large quantity or specific sizes that are not listed, please send us a message. How to choose a correct size to fitFor example, if your window measures 34" in width by 64" in length, the length of the shade only needs to be longer than your measurement and does not have to be as accurate as its width: •Inside Mount: Window width is shade width; window height is blind height. Blind Width = 34"; Blind Height = 64" or longer.•Outside Mount: Add at least 2" to the blind width and at least 6" to the blind height. Blind Width = 34" + 2"; Blind Height = 64" + 6" or longer. Inside Mount Measurements:Width: Measure the width at the top, middle, and bottom inside of the window frame. Record the narrowest measurement. This ensures a proper fit without scraping.Height: Measure the height from the top inside edge of the window frame to the windowsill or desired length. Record the height. Note: Round up measurements to the nearest 1/8"inch (or 1mm). Do not deduct bracket and drive space from your measurements, we will make sure that they will fit. Outside Mount Measurements: Width: Measure the width where you want the blinds to cover. Add extra width on both sides for desired coverage and overlap.Height: Measure the height from the top to the desired length. Add any extra height for mounting brackets or valances.Note: Make sure to measure wide enough as to cover the entire window and provide maximum light gap coverage. However, this is not a rule other than that shade can cover the opening for your personal preference. A few of things to be considered. May measure the window diagonally to check if the window is square or not. If the window is not square, measure the width at the widest point for outside mount and the narrowest point for inside mount, and the height at the tallest point.If you have multiple windows side by side, try to equally divide the center space for a cohesive look.Check for Obstacles: Ensure there is enough clearance for the shades to operate smoothly, especially if there are handles, cranks, or other obstructions on the window.Double-Check: Review your measurements to ensure accuracy before ordering or purchasing roller shades or blinds.