【Why Choosing "HOTSOON" Branded Blinds & Shades】 With 26 years history,high quality blackout roller shades.HOTSOON free stop mechanism has been tested 10,000 times in the usual lifting or pulling down tests. We provide free replacement service if the product has quality problems within 12 Months.The cordless blinds are available 12-86 inches in width,20-91 inches in height,can be customized to the exact 1/8 inch size,compared to the can't customized products will have stronger shading effect 【Aluminum Cassette Valance】The Roller blinds with aluminum cassette valance,compared to the common cordless roller blinds, can better protect the fabric, so that the fabric is not easy to dirty, while using the hidden installation code design, effectively reduce light leakage.Our blackout roller window shades' fabric contains 4 layers.which makes roller blinds effective on blocking sun and UV rays. 【100% Blackout & Fabric Function】The roller blinds are 100% blackout, it can block the sunlight and protecting privacy,and the thickened fabric has noise reduction function, it allows you to get a better sleep area. The thermal backing balances the temperature, maintaining the indoor temperature during the summer and keeping warm in winter, which helps you cut energy bills,the use of laser cutting process, make fabric does not have a raw edge, and fabric has strong color fastness, no fading 【Convenient & Quite】Thanks to the free stop system, you can stop where you want,and our aluminum tube with three layers, which make the aluminum tube and the fabric's contact surface smoother, reduce the friction of the aluminum tube on the fabric when adjusting the height, so you can adjust the blind smoothly and quietly.The cordless blackout shades are sold with buckle, you can adjust the height of the shade with it,which will make it not easy to let the shade become dirty 【How to Customized Roller Shades】Please click "Customize Now" on the top right corner of the page to customize your blinds.Please select the correct size according to the page instructions 【INSIDE MOUNT】The minimum window frame depth is 2".We will cut 1/4" to the width you provide. The height you buy is the height you get 【OUTSIDE MOUNT】Add 3-6 inches to the actual width and height of the window.We recommend adding 4" or more for better shade ABOUT US The Research and Development, production and application of HOTSOON continue to focus on shade products, and has been pursuing the highest principle of product quality and customer experience. So far, the created products serve more than 80 countries and regions, and are committed to the continuous efforts of mankind's happy life. Finer Details: Accessories Material:Aluminum Feature: Quality Baffle Design,Hidden Mounting Bracket,Reduce Light Leakage Cordless design raises and lowers easily by lifting and lowering the bottom rail,safe for kids and pet. Light Blocking,Energy saving,Sound Insulation, Heat insulation, Heat Preservation, Filtering direct Sunlight,UV Protected Protection of Privacy Suitable for Bedroom,Living room, Kitchen, Bathroom, Office, etc. Can't find the window size you want? We can customize the roller shade, please let us know the following information via Amazon message.