4" Inch 3 Way Duct Hose Connector, Duct Splitter for Exhaust Fan Dryer Vent Hose, T Shape, T Joint, Y Shape (5" Inch // 125mm Metal) : Amazon.co.uk: DIY & Tools
Builder's Best Indoor Hook-Up Dryer Vent Kit in the Dryer Vent Kits department at Lowes.com
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4 Inch 16FT Air Duct,Insulation Aluminum Clothing Dryer Hose,Black PVC Lightproof Vent Hose for Fan Filter and Grow Tent, 2 Clamps Include : Amazon.co.uk: DIY & Tools