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VIVOSUN Ventilation Kit 8 Inch 720 CFM Inline Fan with Speed Controller, 8 Inch Carbon Filter and 25 Feet of Ducting for Grow Tent - Walmart.com
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iPower 6 Inch 350 CFM Inline Carbon Filter 16 Feet Ducting with Fan Speed Controller and Temperature Humidity Monitor and Grow Tent Ventilation, Kits, Black - Walmart.com
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