Long Life Dishwasher Safe Water Chamber for H4i Heated Humidifiers Asthma & Allergy Chinstraps are often used by

Chinstraps are often used by CPAP & BiPAP users to help keep the mouth closed during therapy

EPR pressure relief

This is the Flip-Top Lid (Cover) with Seal that closes and covers the removable humidifier chamber used on all H4i Humidifiers as well as HumidAir 3i Heated Humidifiers

SleepWeaver 3D headgear has rounded strap edges to help prevent pinching

Long Life Dishwasher Safe Water Chamber for H4i Heated Humidifiers Asthma & Allergy Chinstraps are often used byThis long life "cleanable" humidifier water chamber (with a clear tub) will last for 2 years on average with proper care and maintance. It is compatible with all H4i Heated Humidifiers as well as HumidAire 3i (H3i) Heated Humidifiers that have been upgraded using the H4i Flip Top Lid with Seal (Part 26953) or the H3i to H4i Upgrade Kit.