AC Infinity Duct Carbon Filter XL, Australian Charcoal, Extra Large, 4 Inch Blumat Easy First of its kind to

First of its kind to measure air and leaf VPD

If you're unfamiliar with soil test data

| Airflow: 1604 CFM | Noise: 62 dBA | Bearings: Dual Ball

Re-seal when not in use

which are built into ribbed grooves along the rubber clamp to lock it in place

AC Infinity Duct Carbon Filter XL, Australian Charcoal, Extra Large, 4 Inch Blumat Easy First of its kind toDesigned to eliminate odors and chemicals for grow tents and hydroponics room. 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