H4i Water Chamber Upgrade Kit for HumidAire 3i Heated Humidifiers Live Product is designed for use with

is designed for use with all F&P Brevida CPAP/BiPAP Masks

the robust DeVilbiss 525DS Compact Oxygen Concentrator offers just the right balance of cool and quiet for home users

Ultra Fine filters are disposable and should be changed regularly when soiled

It's quiet and small and weighs just 10

H4i Water Chamber Upgrade Kit for HumidAire 3i Heated Humidifiers Live Product is designed for use withThis HumidAire 3i to H4i Conversion Kit allows new H4i water chambers to be used with older HumidAire 3i Heated Humidifiers. WIth the Conversion Kit you get the convenience of added water capacity and the compatibility with the new Long Life H4i Chambers.