Air carbon filter 4 inch is designed with high-quality Australian granular activated carbon, providing you with excellent carbon porosity, effectively eliminating odors and chemicals in grow tents and hydroponic rooms, indoor grow tents, bathrooms, basements and kitchens, giving you clean and fresh air. Product name: Air Carbon Filter. Product material: activated carbon, galvanized steel wire. Dimensions: 4'' flange duct x 14'' length. Product Color: Silver. Package Included: 4'' Carbon Filter × 1, Pre-Filter × 1. . Features: 1. The carbon filter odor control has a premium Australian virgin charcoal bed, rated at 1200+ IAV, providing 100% filtered airflow. 38mm thick charcoal bed ensures higher absorption rate. 2. Insulated flange, honeycomb structure, galvanized steel mesh, conical inner base. Carbon filter for grow tent has a built-in ventilation fan, strong power, low noise, it can produce 500 CFM airflow. 3. The odor removal air filter can be used as an intake or exhaust filter in various settings, such as inline fans and duct fans, intake and exhaust fans, ventilation duct systems.