Photo 1 of Repa Market 4" Inch Male to Female Metal Pipe Coupler 6" Inches Long - Round HVAC Ducting Joiner - Seamless Straight Ventilation Channel Connections - Perfect for Retrofit and Extensions

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Photo 1 of Repa Market 4" Inch Male to Female Metal Pipe Coupler 6" Inches Long - Round HVAC Ducting Joiner - Seamless Straight Ventilation Channel Connections - Perfect for Retrofit and ExtensionsPhoto 2 of Repa Market 4" Inch Male to Female Metal Pipe Coupler 6" Inches Long - Round HVAC Ducting Joiner - Seamless Straight Ventilation Channel Connections - Perfect for Retrofit and Extensions