iPower 6 Inch 442 CFM Duct Inline Fan with 6" Carbon Filter 16 Feet Ducting Combo for Grow Tent Ventilation Graden Acessories The #3 measures around 1/2

The #3 measures around 1/2 inch and the Coarse is about 1/8 to 1/4 inch

Nitrozime® Marine Algae Extract is a plant nutrient supplement derived exclusively from ascophyllum nodosum seaweed

FloraKleen® removes fertilizer residues that can accumulate over time in hydroponic systems

flowers or fresh vegetables all year

it is recommended to use a power expander (such as the Autopilot Lighting Controller)

iPower 6 Inch 442 CFM Duct Inline Fan with 6" Carbon Filter 16 Feet Ducting Combo for Grow Tent Ventilation Graden Acessories The #3 measures around 1/26 Inch 442 CFM Duct Inline Fan Blower: Made with quality UL components for quiet operation. Composite fan blades and center hub which reduces noise and vibration. 6 Inch 1050+ IAV Australia Charcoal Filter: One of the world's most absorbent carbon available; Dimensions: 6" Flange Ducting x 16" Length; Reversible flange. 6 Inch 16 Feet Uninsulated Aluminum Ducting + 2 Stainless Clamps: Flame retardant coating and corrosion resistant wire helix;