THIS IS NOT AN OXYGEN CONCENTRATOR THIS IS A REPLACEMENT PIECE INSIDE OF AN OXYGEN CONCENTRATOR. YOU WILL NEED TO SEND YOUR CORES TO US FOR PROCESSING.
OxygenPlus will be happy to repour your existing Sieve Beds to help restore proper output purity. Once you send your cores to us, we will quickly process your order and return your parts back to you. You will need to contact us to obtain an RMA number and shipping address to send them to.