4 Inch

  1. 118 CFM Can-Filter 9000 Use this small Can Filter to scrub small areas with 4" ventilation of odors and airborne particulates. 4" flange sold separately. Learn More
  2. $53.17

    Use the Common Culture Carbon Filter 4" x 12" 200 CFM for the best carbon filter odor control around your grow space. Activated carbon traps odor-causing and pollutant molecules as they pass through the Common Culture Carbon Filter 4" x 12" 200 CFM, scrubbing the air for supreme odor-control and purification. Learn More
  3. $116.66

    Active Air Fan & Filter Combo Kit includes an Active Air Carbon Filter with virgin activated Australian carbon to absorb the strongest odors plus the Active Air Inline Duct Fan that features an Protected AC motor , low output noise and UL recognized components! Learn More
  4. $68.57

    Active Air Carbon Filters are loaded with virgin activated Australian granular carbon. This carbon adsorbs VOC's (volatile organic compounds) therefore trapping every odor molecule that passes through the filter onto the micro-porous carbon surface. Learn More
  5. $99.03

    Out of stock

    Can Lite Carbon Filters use a finer grade carbon so they are lighter and easier to hang from ceilings as part of your ventilation. The Can Lite 4" carbon filter comes with a 4" flange attached to one side of the carbon filter. Use a fan that's approximately 250 CFM or less with this filter. Learn More
  6. $139.67

    Growers House staff combined these two compatible products so that you can exhaust your growing environment while scrubbing the air for particulates and odors. This package includes the Hurricane 4" Inline fan rated at 171 CFM and the Phresh Carbon Filter 4" X 12" rated at 200 CFM. Learn More
  7. 200 CFM 33 Can Filter Carbon Filters are high quality odor filters developed to be used in conjunction with an inline fan to eliminate odors and airborne pathogens. 4" or 6" flange kit sold separately. Learn More
  8. $80.56

    A breath of fresh air! Carbon filters with built-in 4" flange and an Antibacterial pre-filter included. It comes with an Aluminum top and bottom to reduce weight and increase ease of installation. 51% perforated open area for maximum airflow. 1.8" bed depth of pure virgin activated Australian lightweight granular carbon. Large selection of sizes to meet all your air filtration needs. Recommended fan(s): VTX400, VBC400. 4" x 12". 200 CFM Max. Learn More
  9. $98.56

    A breath of fresh air! Carbon filters with built-in 4" flange and an Antibacterial pre-filter included. It comes with an Aluminum top and bottom to reduce weight and increase ease of installation. 51% perforated open area for maximum airflow. 1.8" bed depth of pure virgin activated Australian lightweight granular carbon. Large selection of sizes to meet all your air filtration needs. Recommended fan(s): VTX400, VBC400. 4" x 16". 235 CFM Max. Learn More