The Can-Filters Original carbon air filter is designed to remove volatile organic compounds (VOC) like paint fumes, hydrocarbons and other odors and chemicals from the air. Made using high-quality, virgin-activated Australian granular carbon, this filter is ideal for use in indoor grow rooms, greenhouses and any other space where high VOC adsorption and long-lasting performance are paramount. At 2.5 inches deep, the carbon bed is one of the thickest on the market. Granular carbon features a huge surface area with more pores than pelletized carbon, meaning the redesigned Can-Filters Original now provides even better capacity for helping keep the air clean and safe in grow rooms and beyond. The revolutionized Can-Filters Original is now up to 25% lighter without sacrificing performance, making it even easier to install.