Replacement Cartridge Filters EO4886 Environmental. Replacement Element for Part Number Environmental EO4886 Filter. 0, Sq FT Media 80/20 Blended FR. Environmental is a registered trademark of the respective company. TDSF-10002256 Replacement Cartridge Filters EO4886 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.