- $34.99Hon&Guan 4'' Insulated Flexible Duct - 8 FT Noise Reducer Hose, Insulated Duct for Exhaust Fan Ductwork Insulation, Heating & Cooling HVAC Ventilation with 2 Clamps, GreyAmazon
- $107.80VEVOR 8 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 InsulationAmazon
- SAVE $4.00$35.99$39.99VEVOR 5 Inch Insulated Flexible Duct R-4.2,25 Feet Long with 2 Duct Clamps, Heavy-Duty Three Layer Protection Air Ducting Hose for HVAC Heating Cooling Ventilation and Exhaust Ductwork InsulationAmazon
- SALEVEVOR 10 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 InsulationAmazon・Sale
- SALEVEVOR 5 Inch Insulated Flexible Duct R-4.2,25 Feet Long with 2 Duct Clamps, Heavy-Duty Three Layer Protection Air Ducting Hose for HVAC Heating Cooling Ventilation and Exhaust Ductwork InsulationAmazon・Sale