4 inch 25 feet PVC ducting, Black(Environmental protection materials)

* Variety of applications: perfect for HVAC ventilation, grow tents air circulation, green houses and grow rooms air intake and exhaust or light fixture cooling, kitchen cooking air exhaust, bathroom smell and moisture exhaust, etc * Specifications: ducting size: 4 inch; length: 25 feet; material: PVC thermoplastic; inner material: aluminum foil. Temperature range: -22°F~212°F(-30°C~100°C) * Premium material: high-quality aluminum foil, high temperature resistant and corrosion resistant, long lasting. PVC thick layer on this ducting can prevent light leaks. Include a pair of 4 inch stainless steel duct clamps * Four-layer design: four-layer design (PVC layer + aluminum foil + PET + aluminum foil) makes it more durable and resistant to leaks, tears, and cuts * Flexible ducting: the aluminum foil duct tube can bend in any direction, allows you to accommodate most space restrictions. Flexible length for inline fan, quick and easy to set up