Standard Features - For Home Sizes up to 3,000 Sq. Ft. - Included: The MHX3C Manual Control Duct Mount Humidistat. - 19 GPD (Based on 120 Plenum Temperature). - Replacement Vapor Pad: 1099-20 (GFI #7047). Replace 1-2 times per season.> - 15 Lbs. - 24V. - 5 Year Warranty.