Koch Disposable Polyester Panel Filters | C&I Equipment Protection

Koch disposable polyester panel filters — synthetic-media panel filtration positioned between fiberglass (MERV 1-4) and pleated (MERV 8+) for applications where polyester construction handles humidity and media migration better than fiberglass. Used in commercial and industrial AHU prefiltration, light-duty residential equipment in humid climates, and process-air applications where fiberglass media would shed. Extended service life over equivalent fiberglass panels. Cut to standard nominal sizes; custom sizes available through our custom Koch filter builder.