Featuring open-air aluminum mesh housing and a 1.8-inch-deep bed of RC412 Australian virgin activated carbon, the 12-inch-by-40-inch DuraBreeze Lite Carbon Filter weighs in at only 58.4 pounds, making it easier to move and suspend than its standard steel cousins. This filter is rated for airflow up to 1,700 cubic feet per minute and efficiently combats odors, mold and mildew over a life span of approximately two years. Includes two pre-filters, an attached 12-inch aluminum flange and a one-year warranty. Overall diameter is 15.5 inches.