this is NOT what is pictured
the item in the picture is the one i need for my machine.. the item in the picture is the particle filter for an Inogen One G-3 (1-4 ltr) ..  the item received (and the ONLY one this guy is selling) is for a Inogen One G-3 (1-5 Ltr) these are totally different and not interchangeable.  Seller needs to change the picture in his ad to show the filter he is selling .. That said it was inconvenient but pretty easy to return this item..
Rating: 2 stars