The AC Infinity AC-DCF6 6" Carbon Duct Filter is a high-quality hydroponic grow room accessory designed to capture odors and contaminants. Made with activated carbon filtration technology and a rust-resistant aluminum filter frame, this filter is durable and efficient. With a filter life of over 1200+ IAV, it offers reliable filtration for extended periods. Its compact size of 6 inches in diameter and length makes it easy to install in exhaust fans, providing cleaner and healthier air for your indoor gardening space. Box has water damage.