【Blackout Fabric】ZSTARR Cellular blind is made of 0.59" single cell blackout honeycomb fabrics and upgraded to aluminum frame structure blinds, longer service life. It's easy to install, and easy to open or close. Honeycomb fabrics have a white backing to reflect even more daylight and provide a uniform appearance from the outside. Perfectly snug into window frames, these blinds minimise light gaps and feature a metallised lining to block out light, ideal for light sleepers or media rooms. 【ENERGY SAVING】 Unique honeycomb construction offers sound absorption, while also reducing the harmful effects of ultraviolet rays and providing ideal insulation for energy efficiency. These cell shades feature air-trapping honeycomb cells that repel summer heat and winter cold alike for year-round comfort and style. 【EASY TO INSTALL BLINDS】Cordless manual mode push-pull system, Blinds for windows can be freely controlled up and down with smooth and stopped in any position, free to control the entry of light through the telescopic push-pull rod with smooth (not included, optional). 【MADE TO ORDER】The blind is customized. You can find the feasible size range in the "Customize Now" on the top right. It's typically installed inside the skylight frame (minimum 2" depth required). Specially L-shape bracket is also available for over-the-frame mounting. Please make sure the net size measurement as precise as possible. To avoid any installation interference, the size will be 0.1" smaller in both width and length. 【Very Important, Please Note】Please read the size instructions of Manual cellular blinds carefully to avoid any size change after placing your order. We will send a size confirmation email in time after you place your order, please check and confirm it so that we can deliver your honeycomb blinds faster. ZSTARR Manual Skylight Shades,Cordless Honeycomb Blinds Full Blackout Light Filtering Fabric Window Shades for Skylight Roof Inclined Plane Room Windows