Persilux Cordless Zebra Dual LayerBlinds for Windows Room Darkening Window Shades Light Control for Day and Night We aim to provide a relaxed upscale feel that is safe for all. Its innovative dual layer design has alternating sheer and solid fabric for your desired level of privacy and light filtration. Great accessories and detailed installation instructions will give you maximum satisfaction. Features * It has been upgraded to have a sturdier bottom rail to prevent the fabric from fraying and there is an anti-collision strip installed under the rail, which can protect your window frame. * Room Darkening and Thermal Insulated.Be good for privacy and undisturbed sleep. * Multipurpose:Suitable for any rooms and most festivals. Multiple colors are available for any of your decor style. Advantages * Cordless window blinds that elevate your décor. * Pull down shades for windows with a cordless mechanism that can easily be pulled up or lowered. How to Measure? * Inside Mounting: Require a minimum 4inches window frame depth. The blind width is for total roller blind width hardware included. * Outside Mounting: Please choose at least 4inches wider than your window width. Your precise measure and careful order will be greatly appreciated to reduce direct return due to wrong size or Non-quality issue.