Honeywell 50033181-001 Large Tank for TrueSTEAM HM509 and HM512

50033181-001 Tank and Gasket for Honeywell TrueSteam Humidifiers This is a large water tank and gasket for use with Honeywell TrueSteam Humidifiers (HM506, HM509, HM512, HM609 & HM612). Note: Part will only fit units manufactured in 2012 and after.