Which M Series Chamber Should I Order?
Here are two documents to help you identify which chamber to order.
If there is any doubt about which one to choose, then order the Universal Kit. The Universal Kit comes with a Universal Base, an R2 Lid, and an R3 Lid and will work in any M Series Humidifier.
Contact our customer service department for further assistance. 800-356-5221.
The is the replacement water chamber for the Respironics M Series Humidifiers.