XPOWER AP-1800D Air Purification System CF35-490 Stage 3 Activated Carbon FilterXPOWER Stage 3 Activated Carbon Filter for XPOWER AP 1800D Air Purification System The CF35 490 Activated Carbon Filter equips the AP 1800D Portable HEPA Air Purification Systems to capture a wide variety of volatile organic compounds (VOCs), including soot and smoke, food odors, fumes from paint and paint thinners, sewer odors, and many other compounds. XPOWER CF35 490 Features Captures a wide variety of volatile organic compounds (VOCs) Utilizes