Standard Water Chamber for H4i Heated Humidifiers 100285 The slim-line design allows for

The slim-line design allows for almost any sleeping position without mask displacement

a wall or airplane seat pocket

adaptive barrier that feels good on the face while also eliminating air leaks

Standard & Large -- are available in two different color schemes -- gray with pink highlights and gray with blue highlights

This Tubing Wrap is made of gray insulated nylon material and includes a zipper along the length of the wrap making it easy to attach and remove

Standard Water Chamber for H4i Heated Humidifiers 100285 The slim-line design allows forThis standard humidifier water chamber (with a frosted tub) will last for 6 months on average with proper care and maintenance. 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.