Builder’s Best V220 Semi-Rigid Aluminum Dryer Vent Hose with 2 Metal Clamps, 4" x 8' Flexible Metal Duct Pipe for Exhaust or HVAC Air Systems

The Builder’s Best V220 Semi-Rigid Aluminum Dryer Vent Duct is a non-insulated Class 0 metal duct designed for general purpose venting of supply, return, or exhaust air. It is suitable for applications including dryers, exhaust fans, and HVAC systems where flexibility and strength are required. Constructed from 100 percent aluminum alloy, the V220 duct is semi-rigid and corrugated, spiral-formed with continuous lockseams. This construction provides durability and allows the duct to be shaped during installation while maintaining form and airflow integrity. The metal material is non-combustible and meets Class 0 flame and smoke development ratings, with a flame speed of 0 and smoke developed value of 0. This duct is rated for operating temperatures from -100°F to +430°F and supports air velocities up to 5,000 FPM (feet per minute). It is designed for maximum positive and negative pressures of 6 inches water gauge. Each duct measures 8 feet in length and ships compressed to 23 inches for convenient packaging and transport. For a secure and professional installation, 2 durable metal clamps are included, allowing for easy attachment to vent connections. The duct features plain ends for simple connection to compatible fittings or clamps (sold separately). Made in the USA, the Builder’s Best V220 Semi-Rigid Aluminum Duct offers a durable, metal venting solution designed to meet performance standards for Class 0 flexible ducts.

• Flexible Aluminum Duct: Semi-rigid vent hose designed for dryer, exhaust, and HVAC ventilation, offering easy positioning and dependable airflow in tight or narrow spaces
• Durable Construction: Made from 100 percent aluminum alloy with continuous lockseams for strength and longevity, resisting kinks, crushing, and corrosion over years of reliable use
• Compact Storage: 4-inch by 8-foot duct ships compressed to 23 inches for efficient storage and transport; expands to full length during installation for smooth, reliable airflow performance
• Heat Resistant: Class 0 non-combustible metal rated for -100°F to +430°F with zero flame or smoke development in high-heat dryer environments; includes 2 metal clamps for secure attachments
• Built for Performance: Builder’s Best is a trusted American brand known for durable, easy-to-install venting products that keep dryers and HVAC systems running efficiently