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This $20 intake filter is perfect for keeping the pet hair and dust out of the grow room. I've been using this for awhile and it's worked so well that I wanted
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6 Inch Centrifugal Activated Carbon Air Filter Fan For Grow Tent – Herboponics - Hydroponics For Everyone
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Phat HEPA Intake Filter, 4" | Discounted Hydroponic Commercial Indoor & Outdoor Grow Supplies at GrowGeneration
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