Choose Options NC Fitration PLEATED FILTER 18" X 18" X 1" MERV 8 FOR PHOENIX GUARDIAN PRO500 $7.45 Choose Options
Choose Options Drieaz DRIEAZ 2" PLEATED MERV-8 FILTER FOR HEPA 700 AIR SCRUBBER $27.45 Choose Options
Choose Options Filtration Group HEPA FILTER 18" X 18" X 2.5" FOR PHOENX GUARDIAN PRO 500 $189.95 Choose Options
Choose Options Filtration Group CARBON FILTER 18" X 18" X 1" FOR PHOENIX GUARDIAN PRO 500 $92.95 Choose Options