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Amazon.com: Dryer Vent Hose, PVC Ducting Hose HVAC Flexible Dryer Air Vent Pipe for Ventilation System (5 Inch × 6.5 Ft) : Tools & Home Improvement
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Lambro 4-in x 4-in Plastic Round Duct Elbow in the Duct Transitions & Connectors department at Lowes.com
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