The General Filters GeneralAire Model 1137 is an efficient fan-assist evaporative humidifier designed to bring optimal comfort to your home. With a daily moisture output of 18 gallons based on a 120°F plenum temperature, this humidifier ensures a balanced and healthy indoor environment.

Suitable for home sizes up to 3,000 square feet, the humidifier is designed for installation in the warm air / return air plenum, with a plenum opening of 15 inches in width and 9 3/4 inches in height, and a bypass opening of 6 inches. Sold in pallet quantities of 21 units, the GeneralAire Model 1137 features an MHX3C manual-control duct mount humidistat, providing easy control of humidity levels.