Manufactured with only the finest virgin RC-48 Australian activated carbon, the Pro-Lite filters effectively remove 99.5% of volatile organic compounds. The PreFilter eliminates bigger particles such as dust to prevent premature usage of the carbon. Rated for continuous worry-free operation, lightweight and its compact dimensions, make the Pro-Lite filters ideal for your air filtration needs. - Integrated flange - Available in 10 sizes - Aluminum top and bottom - Lightweight