Hydrofarm Active Air HAF4 Flange Dual Kit, 4"

Hydrofarm Active Air HAF6 Flange Dual Kit, 6"

POWERTEC 70126 Inlet Flange, 4-Inch

iPower GLDUCT4X8C 4 inch 8 feet Non-Insulated Flex Air Aluminum Foil Ducting Dryer Vent Hose for HVAC Ventilation with 2 Clamps

Hydrofarm Active Air Stainless Steel Duct Clamps, 4" (Pack of 2)

AC Infinity Flexible 4-Inch Aluminum Ducting, Heavy-Duty Four-Layer Protection, 25-Feet Long for Heating Cooling Ventilation and Exhaust

AC Infinity CLOUDLINE S6, Quiet 6” Inline Duct Fan with Speed Controller - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

iPower GLFANXCONTROL Exhaust Variable Speed Adjuster for Duct Inline Fan Vent Blower, HVAC Controls, 350W, Black

VIVOSUN 4 Inch Air Carbon Filter Odor Control with Australia Virgin Charcoal for Inline Fan, Grow Tent Odor Scrubber, Pre-Filter Included, Reversible Flange 4" x 14"