Active Air Carbon Filter, 6" x 16", 400 CFMDescription Active Air Carbon Filters: These filters are packed with virgin activated granular carbon from Australia. The carbon effectively absorbs Volatile Organic Compounds (VOCs), trapping every odor molecule that passes through the filter onto the micro porous carbon surface. These lightweight filters excel at eliminating even the strongest odors. Each filter is machine packed, ensuring maximum efficacy, and comes with a pre filter. Attached