Oxygen Concentrator Replacement Filters are commonly used by people who require supplemental oxygen on a regular basis. Oxygen Concentrator Replacement Filters act as a sieve to remove contaminants from the air. It allows air to safely pass through while catching and trapping any pollutants. The Oxygen Concentrator Replacement Filters help to maintain a safe indoor quality of air for the user. Ongoing maintenance and regular filtering is such an important part of the life of an Oxygen Concentrator Replacement Filter as it provides clean and breathable oxygen while removing debris, dust, and other polutants from the air.