AC Infinity Inline Duct Fan Silencer, 4" SHIP_FR20 This delicious treat for plants

This delicious treat for plants is extraordinarily fragrant and colorful

The result is crystal clear

The front of the meter has two buttons

established plants

AC Infinity Inline Duct Fan Silencer, 4" SHIP_FR20 This delicious treat for plantsAC Infinity Inline Duct Fan Silencer A 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