Amazon.com: Simple Deluxe 20” Box Fan, 3-Speed Cooling Fan with Aerodynamic Shaped Fan Blades, Convenient Carry Handle and Safety Grills,White : Home & Kitchen
Aerospeed 20" Box Fan
Lasko 21-3/4 in. H X 20 in. D 3 speed Box Fan - Ace Hardware
Utilitech 20-in 120-Volt 3-Speed Indoor White Box Fan in the Portable Fans department at Lowes.com
Impress 10-in 3-Speed Indoor White Oscillating Box Fan in the Portable Fans department at Lowes.com