Presenting the Headwind HVC Premium Long-Life Carbon Filters: the ultimate solution for maintaining discretion and optimising air quality in your indoor growing space. Eliminate the concern of intrusive odours invading your space and affecting those nearby. These superior carbon filters efficiently direct the freshest air to support your plant’s growth. Designed to seamlessly integrate with centrifugal, silenced, or mixed flow fans, HVC carbon filters are built for durability and outstanding ventilation management. For extra ease, each package comes with 2 Velcro Prefilters Model: 125mm x 300mm Flange: 125mm Weight: 4.6kg Speed: 408m3/h Ventilation Power: 240CFM