Duct Fan Silencer 4 - Duct Fan Silencer for 4" Duct Fan rock-bottom They feature stronger corners and

They feature stronger corners and a low profile to fit under flood tables and other hydroponic systems

Takes up 6U of space

500°K - 10

water-soluble fertilizer for lush

One Super Green LED will light up to a 6' x 6' space

Duct Fan Silencer 4 - Duct Fan Silencer for 4" Duct Fan rock-bottom They feature stronger corners andA 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