Koch Permanent Washable Metal Filters | Aluminum, Galvanized & Stainless

Koch permanent washable metal filters for installations where reusable filtration outweighs MERV efficiency — kitchen exhaust, grease applications, light-duty industrial intake, and any housing where filter changes are operationally difficult. Type MA aluminum mesh for general air and grease applications. Type MS galvanized steel for higher-temperature kitchen and light-industrial use. Stainless steel for wash-down environments, food service, and pharma where metal contamination is forbidden. All three constructions are washable, reusable, and engineered for indefinite service life with proper cleaning intervals. Pair with appropriate prefilter media for combined particulate + grease applications.