Phat Organic Air Greenhouse HEPA Air Intake Filter Size:4in Aerates and enriches the soil

Aerates and enriches the soil with nutrients and minerals including up to 5 times the available nitrogen

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Phat Organic Air Greenhouse HEPA Air Intake Filter Size:4in Aerates and enriches the soilThe tightly woven synthetic HEPA fibers in this filter will help prevent mold, bacteria, pollen, insects and plant pests from entering your growroom or greenhouse. The HEPA fibers block out most airborne particles down to . 3 microns in size. That is 300 times smaller than the diameter of a human hair. The filter is also washable for extended efficiency. Installation: Attach your HEPA filter to your fan, blower or reducer by sliding the rubber collar