Dial 8912 Evaporative Cooler Cover, 28'' W x 28'' D x 34'' H, Polyester, Gray 300 denier x 300 denier polyester fabric with double stitched seams, strong draw rope and heavy-duty brass grommets. Compared to canvas, these covers are stronger, last longer and won't shrink. The water-resistant polyurethane coating prevents water from entering cooler while still allowing water vapor to escape, inhibiting moisture buildup inside cooler. Cover is suitable to all seasons as it protects cooler from rain, snow and UV. Durable WeatherGuard? fabric Adjustable closure system All season protection Easy to install Folds smaller for easy storage Width : 28 in Depth : 28 in Height : 34 in Material : Polyester