Novatek F4020 Pad Filter 24x24 - Case of 40

This Stage 2 pre-filter is a single-ply filter used alongside the Ring Filter. It filters up to size 5 microns, including dust, mold, and other particulate controls. It is important to replace these filters when dirty, as they are more effective when clean and therefore the primary filter stays cleaner for longer. Compatible with the Novatek Novair 2000. Part Numbers: F4020 Case of 40 filters. Dimensions 24" x 24" x 1/4"