This upgraded fan offers a powerful concentrated air flow for enhanced Jobsite use. Add it to your 20V MAX system of tools. Stand it up, hang it, or mount it where you need, so it is not in the way. Plus, it offers variable speed control so you can set the power you want. Powerful Upgraded Motor to Provide Up To 650 CFM IP 54 Rated Multiple hanging options - freestanding, hang hooks, and wall mount Wide-Range, Variable Speed Control Up to 4.5 Hours runtime on MAX airspeed (using a DEWALT 5.0Ah Battery)