GeneralAire® Evaporator Sleeve, For Use With: AprilAire® Humidifier Model 350, 360, 568, 560, 600, 700, 760 and 768, Honeywell Humidifiers Model HE260, HE265, HE360 and HE365, 7 in ID x 9 in OD, Foam, 7-1/2 in W