20″ Premium Box Fan Plus Model 3721

  • Patented, isolated Weather-Shield® motor for worry-free window use
  • High performance grill for ultimate air flow
  • Three quiet speeds
  • Save-Smart™ Less than 2¢ per hour
  • Top-mounted controls
  • Easy-carry handle
  • Two-year limited warranty
  • Includes a patented, fused safety plug
  • E.T.L. listed
  • 21 1/4″L x 4 3/4″W x 22 1/2″H

 
 
 
 

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