Inogen One G4 Replacement Sieve Columns x 2 1-3 L Model (1 Pair) RP-406
Please note - if fitted by yourself and not via one of our service technicians, there will be no warranty on the part supplied.
If the alarm persists after replacing the columns/sieves, this is probably due to an underlying fault with the device. In which case, please contact your oxygen provider, who will be able to assist you further

Note: once fitted this item cannot be returned.
Please Note That Sieve Beds are not returnable/Refundable once open (once the seal has been removed)