These are replacement sieve columns that are specifically designed for use with the Airsep Visionaire 5 oxygen concentrator. The set consists of two sieve columns, which are essential components of the concentrator. They work by filtering out nitrogen from the surrounding air, leaving behind highly concentrated oxygen. When the sieve columns become worn out or damaged, they need to be replaced in order to maintain the efficiency and effectiveness of the oxygen concentrator. These replacement sieve columns are made to the same high-quality standards as the original components and are easy to install. BE187-2S
Please Note That Sieve Beds are not returnable/Refundable once open (once the seal has been removed)
