Standard Features - Included: Our GFX3 Automatic Digital Humidistat. Features a manual or automatic mode with an outdoor sensor for temperature compensating control. - For Home Sizes up to 3,000 Sq. Ft. - DuraPlast ultra-violet stable automotive grade plastics. - Integral humidity control bypass damper. - Transformer, solenoid valve, Vapor Pad, saddle valve. - Fan-powered unit mounts easily on the warm air plenum and delivers 18 GPD. - 15 Lbs. - 120V. - Replacement Vapor Pad GA19 (GFI #7919) or 990-13 (GFI #7002). Replace 1-2 times per season. - 10 Year Warranty.