The ResMed S9 H5i Cleanable Tub is interchangeable with the S9 H5i Standard Tub that's generally included with the ResMed S9 CPAP humidifiers. If your S9 H5i humidifier came with a standard tub, you can replace that standard tub with this cleanable tub without having to buy anything else.
The ResMed H5i Cleanable Tub is a long-lasting, dishwasher safe water chamber for the H5i Heated Humidifier designed for use with the ResMed S9 CPAP machines. This cleanable tub can be opened and either hand washed or placed in a diswasher for easy cleaning.
The standard tub for the H5i is not openable, and must be cleaned by agitating hot, soapy water inside the chamber. The recommended replacement schedule for the standard tub is every six months. The cleanable tub is designed to last longer and to be replaced less frequently than the standard tub.