4'' x 25FT Insulated Dryer Vent Hose with 2 Clamps, Flexible Aluminum Ducting for HVAC Heating Cooling Exhaust, 3-Layer Protection with Fiberglass, R-6 Flame Retardant

Constructed with thick aluminum foil, spiral steel wire, and a layer of fiberglass insulation, this vent hose reduces heat loss and improves thermal efficiency, making it ideal for HVAC, exhaust, and ventilation systems. Uses Owens Corning high-loft insulation cotton to effectively reduce heat transfer and absorb operating noise, enhancing comfort and energy efficiency in residential or commercial applications. Engineered with a three-layer design—PET-aluminum outer, fiberglass insulation, and inner aluminum tubing—this duct offers R-6.0 flame resistance for improved safety and long-lasting durability. The flexible hose can be bent, compressed, or trimmed without damaging the internal structure, ensuring smooth airflow, reduced resistance, and easy adaptability during complex installations. Widely applicable for central air conditioning, dehumidifiers, greenhouses, and ventilation systems, this duct meets temperature regulation and airflow needs in diverse environments.