Photo 1 of 4" Inch Flexible Aluminum Ducting Hose Insulated R-4.2 Air Duct Pipe for for Heavy Duty HVAC & Exhaust Ductwork Insulation - 25' Feet Long 4 Inch - 25' Feet R-4.2 Yellow

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Photo 1 of 4" Inch Flexible Aluminum Ducting Hose Insulated R-4.2 Air Duct Pipe for for Heavy Duty HVAC & Exhaust Ductwork Insulation - 25' Feet Long 4 Inch - 25' Feet R-4.2 YellowPhoto 2 of 4" Inch Flexible Aluminum Ducting Hose Insulated R-4.2 Air Duct Pipe for for Heavy Duty HVAC & Exhaust Ductwork Insulation - 25' Feet Long 4 Inch - 25' Feet R-4.2 YellowPhoto 3 of 4" Inch Flexible Aluminum Ducting Hose Insulated R-4.2 Air Duct Pipe for for Heavy Duty HVAC & Exhaust Ductwork Insulation - 25' Feet Long 4 Inch - 25' Feet R-4.2 Yellow