TrueSTEAM 9-gallon humidifier with H8908 manual humidistat. Steam provides the highest and most consistent levels of humidity. Mount directly to the duct or remotely up to 20 feet away in tight-fitting or unconditioned air spaces. Installs in minutes; limited duct cutting and bracket-mount design takes less than five minutes to complete. Easy maintenance; self-regulates cleaning cycles throughout the year. Annual maintenance requires no tools to access and clean. Five-year warranty. Capacity: nine gallons/day. Temperature range: 1.1-40C. Includes humidifier, H8908 manual humidistat, duct template hardware, saddle valve, drain supply water tubing, duct nozzle, mounting bracket, water filter, backflow valve.