4,000 Exec Carbon Filter provides maximum air purification for rooms, so that they are able to be better prepared for living conditions. The filter is ideal for purifiers that can utilize the specific make and size allowing for the best filtration made available on the market. Filters provide a way to capture dust and particles that can be harmful to people in a room or building. These filters are particularly useful for anyone who is suffering from allergies or sicknesses. Filtration systems allow for air purifications to run at their finest and the 4,000 Exec Carbon Filter is an easy to use filter for professional air purifiers.