Duct Carbon Filter XL, Australian Charcoal, Extra Large, 4-Inch

Designed to eliminate odors and chemicals for grow tents and hydroponics rooms. 
Features premium-grade Australian charcoal with higher adsorption and longer life rating. 
Extra-large size contains larger carbon bed for longer lifespan while maximizing airflow passthrough.
Includes two prefilter cloths and two rope hangers; built with aluminum flanges and stainless-steel meshing.
Duct Opening: 4” | Length: 16″ | Airflow Rating: 300 CFM | Carbon: Australian RC412 at 1200+ IAV | Thickness: 38mm