HVACQuick.com Accumulair 4 Inch CARBON Filters FO18X24X4

18x24x4 (17.5 x 23.5 x 3.5 Actual Size). Accumulair Carbon Filters. Accumulair Carbon Odor-Ban Filters - 4 inch thickness. Carbon impregnated disposable pleated panel filters. A simple solution for controlling both odors and dust particles! Odorous gases and vapors are attracted to and held by the unique properties of the activated carbon material. Can be installed in virtually any HVAC system without modifications. Ideal applications include odors from cooking, new paint, new carpet, bathroom smells, cigarette smoke odor, pet odors. This product is listed and rated by Underwriters Laboratories as U.L. Class 2.