ACI manufactures the "ULTRA" with MICRO-CK"R(TM) an antimicrobial that inhibits the growth of bacteria, mold, mildew and fungi. The "ULTRA" is a permanent, washable, electrostatic air filter. ACI has a wide range of air filtering products to meet the consumer's need. Products range from all types of disposble air filters to carbon air filters and wire mesh filters. OEM and special application needs can be designed by our engineers. Custom air filter sizes available at no extra charge.