ResMed Flip-Top Lid & Seal for H4i™ Heated Humidifiers
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COMPATIBLITY: This Flip-Top lid is compatible with all H4i Heated Humidifiers. It can also be used to replace the original Flip-Top lid used on HumidAire 3i Heated Humidifiers. Once the original HumidAire 3i's lid has been replaced it will be compatible with new H4i Water Chambers. After upgrading it will NOT be compatible with original HumidAire 3i Water Chambers.