Photo 1 of VEVOR 4 Inch Insulated Flexible Duct R-6.0?25 Feet Long with 2 Duct Clamps, Heavy-Duty Three Layer Protection Air Ducting Hose for HVAC Heating Cooling Ventilation and Exhaust Ductwork Insulation 4 INCH- 25FT Silver

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Photo 1 of VEVOR 4 Inch Insulated Flexible Duct R-6.0?25 Feet Long with 2 Duct Clamps, Heavy-Duty Three Layer Protection Air Ducting Hose for HVAC Heating Cooling Ventilation and Exhaust Ductwork Insulation 4 INCH- 25FT SilverPhoto 2 of VEVOR 4 Inch Insulated Flexible Duct R-6.0?25 Feet Long with 2 Duct Clamps, Heavy-Duty Three Layer Protection Air Ducting Hose for HVAC Heating Cooling Ventilation and Exhaust Ductwork Insulation 4 INCH- 25FT SilverPhoto 3 of VEVOR 4 Inch Insulated Flexible Duct R-6.0?25 Feet Long with 2 Duct Clamps, Heavy-Duty Three Layer Protection Air Ducting Hose for HVAC Heating Cooling Ventilation and Exhaust Ductwork Insulation 4 INCH- 25FT Silver