【ORDER CONFIRMATION】We provide plenty of choices to fit your window sizes. Click "Customize Now" to find more. Order the closest size and then we will send email within 24 hours to confirm window information,if we do not get any reply in 48 hours, we will make the size without any adjustment. If you are not sure about size and color, please order one blind to test or take photos of your windows to us and we will give you some advice. 【2 in 1 Day/Night Cellular Shades】It is a combination of light filtering blinds and light blocking blinds. On days when you want to enjoy the warm sun, use the Light Filtering shade to create a gentle shade. Different from the traditional one, the sheer design allows you to enjoy the light while also having privacy. When you need complete privacy or want to keep cool, use the Blackout shade to block out all views and rays. A blind price is equal to have the use of two blinds effect. 【EXCELLENT ACCESSORIES】The headrail, the middle and the bottom rod are all made of aluminum, they are weighted and rigid so it hangs flat and prevents from wind blowing. They are color-matched with the fabric, which makes the blind look more clean and comfortable. Upgraded brackets make the fabric closer to the window to ensure a better shading. The upper and bottom rod can be adjusted freely to achieve sunlight control and privacy protection. 【UPGRADED LAMELLAR SPRING SYSTEM】Persilux upgraded lamellar spring system has passed 10,000 times usual lifting or pulling down tests for each blind and makes it easy to raise and lower the blind evenly every time and stay balanced automatically; it retracts and extends smoothly with constant force; our patented spring winder inside prolongs the lifespan of the springs, avoids the rebound or sagging performance and simplifies the mount of the blind. 【How to choose a correct size to fit? Example your window meas 23" width by 64" length.】INSIDE MOUNT: window width is blind width, window height is blind height. Blind Width=23"; Blind Height=64". OUTSIDE MOUNT: Plus at least 4" is blind width, plus at least 4" is blind height. Blind Width=23"+4"; Blind Height=64"+4".【Pls Note】If you need inside mount, the depth of your window should be at least 1.2". Pesilux Top Down Bottom Up Cordless Cellular Window Shades With Sheer Light Filtering & Blackout 【2 in 1 Day/Night Cellular Shades】It is a combination of light filtering blinds and light blocking blinds. On days when you want to enjoy the warm sun, use the Light Filtering shade to create a gentle shade. Different from the traditional one, the sheer design allows you to enjoy the light while also having privacy. When you need complete privacy or want to keep cool, use the Blackout shade to block out all views and rays. A blind price is equal to have the use of two blinds effect. 【EXCELLENT ACCESSORIES】The headrail, the middle and the bottom rod are all made of aluminum, they are weighted and rigid so it hangs flat and prevents from wind blowing. They are color-matched with the fabric, which makes the blind look more clean and comfortable. Upgraded brackets make the fabric closer to the window to ensure a better shading. The upper and bottom rod can be adjusted freely to achieve sunlight control and privacy protection. 【UPGRADED LAMELLAR SPRING SYSTEM】Persilux upgraded lamellar spring system has passed 10,000 times usual lifting or pulling down tests for each blind and makes it easy to raise and lower the blind evenly every time and stay balanced automatically; it retracts and extends smoothly with constant force; our patented spring winder inside prolongs the lifespan of the springs, avoids the rebound or sagging performance and simplifies the mount of the blind. 【100% SATISFACTION GUARANTEED】 We provides professional customer service before and after purchase; we always respond within 25 hours. If there is any problem with your usage in the future, please feel free to let us know.