Best Highest Cfm Box Fan

Hurricane

Hurricane Classic 20" Floor Box Fan – Compact and Portable, Powerful and Quiet 3-Speed Cooling for Home, Greenhouse, Office, Gym, Garage, and Workshop

Comfort Zone Cradle Floor Fan, Electric, High-Velocity,180 Degree Adjustable Tilt, 18 inch, 3 Speed, Carry Handle, Rubber Feet, Metal, Airflow 19.36 ft/sec, Ideal for Garage or Workshop, CZHV18BK

Lasko 20", High-Velocity Commercial Grade QuickMount, Converts from Floor Wall Mount Fan Ideal for Garages, Basements, Gyms, 2264QM, 7 x 22 x 22 inches, Black Silver

Comfort Zone Box Fan with Carry Handle, 20 inch, 3 Speed Full-Force Air Circulation with Air Conditioner, Floor Fan, Bedroom Fan, Airflow 15.03 ft/sec, Ideal for Home, Bedroom & Office, CZ200A

HiCFM 8200 CFM 24 inch Portable High Velocity Drum Fan With Powerful 1/3 HP Motor, Turbo Blade, 3 Speed Low Noise Design and 9ft Power Cord for Air Circulation, Convenience - UL Listed

Lasko 20″ Weather-Shield Performance Box Fan-Features Innovative Wind Ring System for Up to 30% More Air, 20 Inch, 3720

KEN BROWN 20 Inch High Velocity Floor Fan, 3-speed, 5 Blades, 360 Degree Tilting, Heavy Duty Metal Floor Fan for Garage, Shop, Gym