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203mm aluminium ventilation duct | Ventilation \ Ventilation ducting and silencers \ Aluminium ventilation hoses | Maxgrowshop.com
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TerraBloom 8 Inch Aluminum Flex Duct - 8 FT Long, Flexible Ducting with 2 Clamps, 3 Layer HVAC Ventilation Air Hose - Great for Dryer, Grow Tent, Green Houses, Household HVAC Venting - Amazon.com
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