The VIVOSUN 4 Inch 8 Feet Flex Air Aluminum Ducting is designed for HVAC ventilation and comes with two 4" clamps for easy installation. This ducting is available in multiple diameters (4"/6"/8") and is made of durable aluminum material. It features multi-layer protection to ensure efficient air flow within your ventilation system. The VIVOSUN ducting is a reliable choice for maintaining proper air circulation in indoor gardening setups or other ventilation applications.