Inline Duct Silencer, 4-Inch Growing Environment Its small size and built-in

Its small size and built-in 120mAh lithium battery make it incredibly easy to carry and position

Each filter is shrink wrapped

4" specs  Duct Opening: 4” | Length: 13" | Airflow Rating: 210 CFM | Carbon: Australian RC412 at 1200+ IAV | Thickness: 38mm

EFFECTIVE FOR RAPID ROOT GROWTH: Hormex rooting compound consists of Indole-3-Butyric Acid

Forest Moss is perfect for a more grassy moss look around plant bases and above soil

Inline Duct Silencer, 4-Inch Growing Environment Its small size and built-inA duct muffler designed for use with inline fans in grow tents, bathroom fans and other HVAC applications. Features dual aluminum flanges to help absorb sound waves from fan vibrations and airflow. High quality neoprene foam in an egg crate pattern that will reduce fan noise by up to 50%. Galvanized steel body that is corrosion resistant and can withstand extreme temperatures. Duct Opening Diameter: 4 inches Length: 15 inches Weight: 2. 30 pounds A