Replacement Cartridge Filters EO4432 Environmental. Replacement Element for Part Number Environmental EO4432 Filter. 13.8" OD X 28" L, Open/Open 80/20 Blended FR sq ft media. Environmental is a registered trademark of the respective company. TDSF-10002221 Replacement Cartridge Filters EO4432 Environmental.Our Replacement filters Work As Good Or The Same As The OEM Filters. We guarantee their performance. Some of the filters are non stock items and cannot be returned. Please see our return policy.