BOX FAN - Industrial - Belt Drive - 36" - 1/2 Hp - 115V - 1 Phase 10,800 CFM - The VirTau Company
For Living Plastic 5-Blade Portable Box/Floor Fan, 2-Speed,White, 20-in | Canadian Tire
Home made box fan and CFM measurements - YouTube
48" Schaefer Mobile Box Fan - 20,679 CFM, 1 HP, 115 Volt - Big Fogg
48 inch Schaefer Mobile Box Fan - 20,679 CFM, 1 HP and 115 Volt
Lasko 20″ Weather-Shield Performance Box Fan-Features Innovative Wind Ring System for Up to 30% More Air, 20 Inch, 3720
Amazon.com: Hurricane Box Fan - 20 Inch, Classic Series, Floor Fan with 3 Energy Efficient Speed Settings, Compact Design, Lightweight - ETL Listed, White : Home & Kitchen