Looking for a 20-inch box fan that makes the room feel cooler? Discover a selection of customer favorites here at Lasko. Adaptable and portable, these efficient box fans come with a carry handle, so you can use them anywhere you need a blast of cooling air – from in-home yoga studios to college dorms. Whether you choose classic black or white or add a pop of color to your home with our Cool Colors options, you’ll love these go-anywhere 20” box fans. Our comprehensive selection includes Weather-Shield® fans, which are built with patented technology for worry-free window use.