Darken your bedroom, living room, office, or movie room in style with this energy efficient blackout fabric roller window shade. Child friendly roll up mechanism makes lifting and Lowering this roller window shade with child safety lock easy. Durable 100percent polyester fabric can also help block damaging UV rays. With inside mount, there is an approximate 1-inch vertical light Gap between the edge of the fabric and the inside edge of the window. For total room darkening, layer this chain roller fabric shade under blackout fabric curtains to sleep longer and more peacefully, or consider an outside mount. Hardware adds an extra 625 Inch in width to the nominal size of this fabric shade. Roll up fabric panel is 5 Inch narrower than nominal size listed.