Dial Mfg 8941 Cooler Cover, 37 Inch x 37 Inch x 42 InchThis down draft cooler cover helps prolong the life of an evaporative cooler by preventing rust and corrosion to the cooler and cooler parts. Highlights: Size : 37 Inch x 37 Inch x 42 Inch The cover is 50 percent lighter than canvas and lab tested to be just as strong as traditional duck canvas Additionally, all seams are double stitched The fabric is water resistant while still letting moisture inside the cooler escape The cover and tie down string