PRECISE DIMENSIONS – Main duct diameter Ø 3.9 In (99 mm), branch diameter Ø 3.9 In (99 mm), total lenght (main duct) 10.98 In (279 mm), branch angle 45°. Accurately sized for standard 4" Inch / 100 mm HVAC duct systems to ensure a tight and balanced fit. DURABLE GALVANIZED STEEL CONSTRUCTION – Manufactured from high-quality galvanized metal with excellent strength, toughness and corrosion resistance. Non-toxic and environmentally safe material suitable for indoor and outdoor use even in harsh weather conditions. SMOOTH AIRFLOW DESIGN – The interior curvature and smooth finish reduce airflow resistance and pressure loss through the duct. Ensures efficient air distribution and balanced exhaust across multiple ventilation branches. LEAKPROOF AND EASY CONNECTION – Precisely engineered for a seamless fit with round ducts and dryer vent hoses. Creates a secure airtight joint without leakage after installation. Compatible with standard HVAC vent covers, exhaust fans and duct seals. MULTI-PURPOSE APPLICATION – Ideal for home and commercial ventilation projects including kitchens, bathrooms, offices and laundry rooms. Reduces installation cost compared to cast iron connectors while maintaining high airflow efficiency., Weight: 1.1464037624 pounds, Manufacturer: Repa Market