4" x 8' Dryer Vent Hose, Aluminum

A048/9 Deflecto Semi-Rigid Aluminum Dryer Vent Hose – 4" x 8'

The Deflecto A048/9 Semi-Rigid Aluminum Duct is engineered for professional venting applications including dryers, bathroom exhaust fans, and kitchen range hoods. Constructed from 3003 aluminum alloy, this Class 0 semi-rigid duct offers high temperature resistance and strength while maintaining flexibility for installation in limited-space environments. Designed for efficient airflow and long service life, it meets performance and safety standards for residential and light commercial ventilation systems.

Technical Specifications

• Manufacturer: Deflecto, LLC
• Model Number: A048/9
• Product Type: Semi-Rigid Flexible Duct / Vent Hose
• Material: 3003 Aluminum Alloy
• Construction: Helically wound, semi-rigid aluminum tubing
• Diameter: 4 inches (inside diameter)
• Length: 8 feet (fully extended)
• Width (flat): 6 inches nominal
• Temperature Rating: -100°F to 430°F (-73°C to 221°C)
• Maximum Air Velocity: 5000 feet per minute (FPM)
• Pressure Rating: Up to 10 inches w.g. positive / 1 inch w.g. negative static pressure
• Fire Rating: Class 0 per UL 181 (non-combustible)
• Bend Radius: 4-inch minimum recommended
• Application: Dryer exhaust, bathroom fan venting, kitchen range hood ducting, and general-purpose ventilation
• End Connection: Compatible with standard 4-inch collars and clamps
• Compliance: UL 181 Class 0, IMC and IRC compliant for dryer vent installations

Professional Notes

The Deflecto A048/9 duct is intended for use by HVAC and mechanical contractors in residential or light commercial venting systems. The 3003 aluminum alloy provides high tensile strength and corrosion resistance suitable for extended service. Semi-rigid construction allows the duct to maintain shape and airflow integrity after installation, reducing resistance compared to flexible foil ducts. All joints should be secured with approved clamps or foil tape, and installation must comply with local mechanical and building code requirements. This duct is not designed for concealed spaces or return air applications.

Summary

The Deflecto A048/9 Semi-Rigid Aluminum Duct is a 4-inch diameter, 8-foot long Class 0 vent hose constructed from 3003 aluminum alloy. Rated for temperatures up to 430°F and air velocities up to 5000 FPM, it provides durable, code-compliant performance for professional dryer, bathroom, and kitchen ventilation installations.