This blind is to be installed on a french door or a flat-surface wall above a window casing. Our blinds are crafted with high quality components including high profile steel head rail, quality PVC foam slats, and solid trapezoid bottom rail. Our blinds resist heat and humidity, and are great for all areas including the kitchen, laundry, and bathroom. Mounting hardware and an outside-mount decorative valance with valance returns are also included. Mounting screws provided are best for drywall or sheetrock only. They are not for concrete or metal surfaces.