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Rubber-Cal "Aluminum Flex 400" Hi-Temp Flexible Ventilation Duct Hose - 8 in. ID x 5 ft. 01-W145-8 - The Home Depot
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TerraBloom 6 Inch Aluminum Flex Duct - 25 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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Hon&Guan 3 inch 16 FT Long Air Ducting, Heavy-Duty Four-Layer Protection Dryer Vent Hose for Heating Cooling Ventilation and Exhaust-with 2 Clamps, Black - Amazon.com
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Rubber-Cal HVAC Ventilation 8-in x 300-in PVC Flexible Duct in the Flexible Duct department at Lowes.com
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