Two-Sided Solar Shades Cut Energy Costs Year-Round. During winter, flip them around to reflect heat back into the room! During AC season, hang with the pretty white side in and the reflective mylar-coated silver side facing out to block the heat of the sun. Lets your AC and heating run more efficiently so you'll save on high fuel costs. Blocks light, provides privacy, too. Mounting hardware provided. 72&34L. 36"W Solar Shade. Color White.