
iPower
iPower GLDUCT12X25CX4 4 Pack Non-Insulated Flex Air Aluminum Dryer Vent Hose HVAC Ducting, 12 Inch 25 Feet, 4-Pack, Silver

iPower
iPower GLDUCT14X25CX4 4 Pack 14 Inch 25 Feet Non-Insulated Flex Air Aluminum Dryer Vent Hose HVAC Ducting, 14 in 25 ft-4Pcs, Silver

VIVOSUN
VIVOSUN D4 4 Inch 195 CFM Inline Duct Ventilation Fan HVAC Vent Blower for Hydroponics Grow Tent

AC Infinity
AC Infinity CLOUDLINE LITE A4, Quiet 4” Inline Duct Fan with Speed Controller, EC Motor - Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

Hon&Guan
Hon&Guan 4 Inch Inline Booster Duct Fan with Speed Controller - 130 CFM Airflow with 6W Ultra-Low Power and Low Noise

CONGKAILU
CONGKAILU Upgraded DBF 110 Dryer Booster Fan, Dryer Vent Booster Fan 4 Inch, 4” Dryer Vent Booster Exhaust Fan, 167 CFM

iPower
iPower 4 Inch 8 Feet Non-Insulated Flex Air Aluminum Foil Ducting Dryer Vent Hose for HVAC Ventilation with 2 Clamps, 1-Pack, Silver

iPower
iPower 4 Inch 195 CFM Inline Ventilation Quiet Vent Blower Carbon Prefilter, 8 feet Aluminum Grow Tent Air Circulation, Fan+Filter+Ducting

iPower
iPower GLFANXBOOSTER8CTRL 8 Inch 420 CFM Booster Fan Inline Duct Vent Blower with Variable Speed Controller Adjuster HVAC, Silver