Residential style duct mount humidifier. This model is designed to be duct or wall mounted and comes with a 6' long steam supply hose, wall mount humidistat, plastic steam nozzle and duct mounted high limit switch. It generates steam and delivers the steam directly into the existing ductwork via the included steam supply hose. The Nortec RESDELUX operates on either 120 or 240 volt power. There is an optional blower kit available for it an an additonal cost.