Flexible and bendable ventilation duct for heating, cooling and venting outdoor air to maintain high quality air control. Ducts act as conduits in heating and ventilation to supply and remove air, and are compatible with inline fans and carbon filters to support air exchange and odor control. The hose is kink-free and designed to direct air from the front channels to the spindle channels, delivering smooth, efficient airflow even when routed around obstacles. Easy to install and use, this duct is highly flexible and slides directly onto standard fittings such as pipe fans, vent exhausts, carbon filters or light reflectors for quick setup. Use scenarios: - Grow tent or indoor cultivation ventilation, connecting an inline fan to a carbon filter to manage air exchange and odors. - Small workshop or equipment enclosure exhaust to remove heat and fumes. - Tight spaces around lighting fixtures or reflectors where flexible routing is needed to reach vents or exhaust points.