Compact, space-saving 4″ deep high efficiency air filters.
Incorporates a wet-laid micro fine glass media in a Close-Pleat™ design for optimum airflow, low system air resistance, and extended service life. Maintains its efficiency throughout its life in an HVAC system. Has the lowest pressure drop of any fine fiber 4″ deep mini-pleated filter. Includes thermoplastic resin separators ensuring full use of media area and uniform airflow through the filter. Includes a high wet-strength beverage board frame that is resistant to moisture. Guaranteed against media pack failure to 5.0″ w.g. Available in a variety of sizes for virtually any application.