ISC Sales, Inc. Standard Electrostatic Polypropylene Air Filters

This Electrostatic Air Filter is made of fine mesh electrostatic filter media with a layer of polyester between them and 2 outer layers of heavy net electrostatic guard fabric. The heavy net outer guard fabric is also electrostatic material and provides not only protection for the inner filter media, but uses its own electrostatic properties to capture and hold larger particulates.