2 Pack 4 Inch Inline Duct Fans With Duct Clamps,110 CFM Ventilation Exhaust Fans HVAC Vent Blowers For Grow Tent ,Easy to Install

Say Goodbye to the Stale Air Need to maintain the temperature in your mini greenhouse/grow tent Looking to reduce room humidity and improve air circulation Need an exhaust fan that is powerful while quiet for a large space Contains two 4-inch duct fans and 2 duct clamps, powerful air circulation with low noise, our product may be the solution to solve your troubles.