Honeywell HM609A1000 Tru-steam Humidifier with Ro Filter Kit and Humidipro Control, 9 gal, Black Replacement for HM509A2000 Temperature Range (F) 34 F to 104 F Dimensions (in.) 19 in. high x 11 1/4 in. wide x 9 in. deep Capacity (gal. per day) 9 gal per day Plenum Opening (in.) Diameter--1 3/4 in