🚀 Elevate Your Airflow Game! Designed to minimize ventilation resistance and prevent air leaks for optimal performance. Experience quieter operations with our lightproof and waterproof PVC material. Cut to your desired length effortlessly with common tools—no hassle, just results. Crafted with a 3-layer design, this ducting is built to last and adapt to your needs. Perfect for HVAC systems, grow tents, and more—this ducting does it all! 16ft length 3-layer design Lightproof PVC The YIJU 4 Inch 16FT Air Duct is a flexible, durable ventilation solution made from a 3-layer aluminum foil and PVC material. Ideal for various applications including HVAC systems, grow tents, and exhaust needs, it offers noise reduction, easy installation, and leak resistance, ensuring high-quality air control.