This product will ship for free within United States including Hawaii and Alaska. Please provide an address that the Post Office can deliver to. If items that are not eligible for free shipping are placed in your cart you will be charged for shipping on those items only. All orders over $250 will be shipped for free (excluding Alaska and Hawaii). Look for the "Free Shipping Icon" for the best deals!
The Organic Air HEPA filter has been developed using opposing dual cone technology that optimizes airflow even as it traps and filters out 90 % of molds, insects and bacteria. With the Organic Air Filter protection, your greenhouse or grow room provides just the kind of contaminant-free conditions your plants need to grow to their full potential. As HEPA filters need a large air flow, it is not recommended that you use an 8 inch filter with an 8 inch blower for instance. It would be much more beneficial to use an 8” filter with a 10” fan. HEPAs need the air flowing as fast as possible and in order to do this, you should step up the fan or blower size and use a duct reducer to attach your HEPA filter to the blower. Again, use a larger fan size than the HEPA filter size! More air equals more filtration with a HEPA. Please see flow charts for each model to see how much air is needed to adequately filter your area.