Duct Fan Silencer 8 - Duct Fan Silencer for 8" Duct Fan microbes The pH controller includes a

The pH controller includes a chemically resistant low voltage dosing pump plus both pH and temperature sensors

highest par/lumen output (986umol@18")

there is a Dual Carbon Filter

Collapses flat for storage in the handy zippered case

and our proprietary compost extract base

Duct Fan Silencer 8 - Duct Fan Silencer for 8" Duct Fan microbes The pH controller includes aA 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: 8 inches Length: 27 inches Weight: 6. 00 pounds