24" to 60" sizes available with 115/230V1 or 230/460V3, totally enclosed fan cooled, permanently lubricated motors. 16 gauge steel venturi with steel pipe bracing. Steel blades. Options: Package Fans Available, WS shutter, FG or FSG front guards, PBG rear guards and acid resistant coating available. Double pillow block bearing asl5ft support. Industrial Grey Enamel Finish.