These filters are compatible with all Inogen One and Inogen One G2 Oxygen Portable Oxygen Concentrators.
Inogen : RP-107
This is a replacement Column Pair (Two metal column sieve beds) for use with all Inogen One G3 Portable Oxygen Concentrators. Columns should be changed as needed -- generally once a year.
Inogen : RP-320
We care about you as a customer and will make every effort to work with you if you need to return or exchange an item. You'll find our complete Return, Exchange & Warranty Services Policies outlined on the page below. If you have any questions about our policies please contact us and we'll be happy to assist.