For home sizes up to 3,000 sq. Ft Included: the mhx3c manual-control duct mount Humidistat 18 gpd (based on 120° Plenum temperature) Vapor pad replacement number 990-13 (GFI #7002). replace 1-2 times per season Product details Product Dimensions : 640.08 x 35.56 x 33.02 cm; 7.51 Kilograms Date First Available : Aug. 7 2012 Manufacturer : GeneralAIre Place of Business : WHITE BEAR LAKE, MN, 55082 US ASIN : B000NP44MW Item model number : 5137 A fan inside your GeneralAire Elite Series flow through 1137 pulls warm air from your furnace through the water-soaked vapor pad, where it absorbs additional moisture. The moistened air then returns for distribution throughout your home via your home’s duct system. Newly-moistened and healthier air is provided to you and your family. Show More Show Less
