Low Noise Silencer and 4Inch Lightproof Ducting – Durable, Flexible, and Easy to Install • Noise Reduction: The included silencer is engineered to minimize operational sound from fans and carbon filter systems, reducing noise by up to 50 percent. Ideal for creating a quieter working or growing environment. • Lightproof 4Inch Ducting: Features a thick black PVC outer layer that blocks light leakage. Compatible with exhaust fans, intake fans, carbon filters, and hooded lights designed for 4inch diameter connections. • TripleLayer Durability: Constructed with a tough, threelayer design to protect against rips and pinholes. Beneath the black PVC coating are two layers of aluminum foil combined with a PET layer and reinforced with a steel wire helix. This structure maintains shape and ensures longlasting performance. • Flexible Installation: The 4inch duct is easy to handle and install, fitting directly onto duct fans, vent exhausts, carbon filters, or light reflectors. Supplied as one continuous 16foot length, it can be cut to size using simple tools such as a wire cutter and utility knife. • Practical Applications: Indoor grow rooms: Prevent light leaks, maintain airflow, and reduce fan noise for better plant development. Workshop ventilation: Move air efficiently while keeping operational noise at a minimum. Home exhaust systems: Improve comfort by reducing noise from bathroom or kitchen fans. Specifications: Diameter: 4 inches Length: 16 feet (single piece, length when cut) Material Layers: Black PVC, aluminum foil, PET, steel wire helix Compatibility: 4inch diameter fans, filters, and light fixtures Performance: Up to 50 percent noise reduction, lightblocking ducting, durable triplelayer construction This product delivers quiet, efficient airflow with lightblocking and outstanding durability, making it a reliable choice for ventilation needs in residential, commercial, or horticultural environments.