4 Inch Insulated Flexible Duct Hose For HVAC Systems 25 Feet Long Heavy Duty Aluminum Air Duct R4.2 With Glass Fiber Insulation High Temperature Resistant And Flame Retardant Ductwork Easy Install

4 inch insulated flexible HVAC duct hose with R4.2 insulation
✔️ 4 in dia, 25 ft long, R4.2 glass wool insulation

This insulated 4 inch flexible duct hose is designed for HVAC systems, ideal for central air conditioning, ventilation, and exhaust routes in residential and light commercial settings. It uses thick aluminum foil with a spiral steel wire and an inner glass fiber insulation layer to handle high temperatures and improve energy efficiency, while delivering noticeable sound reduction.

✅ Diameter: 4 in (100 mm)
✅ Length: 25 ft (7.62 m)
✅ Insulation: glass wool, R4.2
✅ Temperature range: -4°C to 454°C; flame retardant
✅ Noise reduction: up to 85% absorption

💡 What is an insulated flexible duct used for in HVAC systems?

This handy duct is designed to route conditioned air in tight spaces while cutting energy waste.

- Handy for routing air through tight spaces in homes and small offices
- Reduces heat transfer and maintains comfort with glass wool insulation
- Supports quiet operation thanks to the fluffy insulation
- Suitable for non-corrosive gas applications in central HVAC systems