Light-Proof Black Duct 4in x 25ft

Light-Proof Black Air Duct 4in x 25ft Our Light Proof Black Air Ducting features a high-quality, aluminum construction that is perfect for use in various applications and as the description indicates, is completely light proof. When properly installed, no light will penetrate the ducting to disrupt your plants' lights out schedule. The spring steel wire helix design, allows for a high degree of flexibility for easy installation and resists punctures and tearing. Perfect for intake and exhaust piping, our Air Ducting dissipates heat at a steady rate, reducing room temperature fluctuations. All of our Air Ducting is specifically oversized by 3/8 in to fit any application. Specifications Ducting Size: 4 Inch (Diameter) x 25 Feet (Length) Fully Extended Light Proof Construction: Blackout Coating - 100% Light Proof Thermal Endurance: Temperature endurance range from 0°F ~ 185°F (-18°C ~ 85°C) Wide Range of Applications: Kitchens, Bathrooms, Greenhouses, Grow Rooms, Grow Tents, etc. Fire Proof Coating: Flexible ventilation ducting made from high-quality flame resistant aluminum and built-in corrosion-resistant wire helix for reinforcement and lasting performance.