Add RecipientHelp Your Air Conditioner Or Furnace Save Energy!
In Summer, Cover The Floor Level Return Air Register So Only Warmer, Ceiling Level Air Is Returned. In Winter, Cover The Ceiling Level Return Air Register So Only The Tower, Cooler Air Is Returned To The Furnace. Also Use These Thick Magnetic "Sheets" To Close Off Registers Without Dampers In Unoccupied Rooms. Each 8"x15-1/2" Magnetic Sheet Can Be Cut To Fit With A Scissors. 0.025" Thick; Paintable. Four White Sheets Per Set.