Fan, 4 Blade

Fan, 4 Blade New 15.5", 4 blade fan has a 1.6" pilot hole, and mounting holes on 2.5" center. The part number for a 4 blade 15", 1" pilot - 544348M91 (Currently not offered by A&I). The part number for a 6 blade 15.5", 1" pilot - 181527M91 (Currently not offered by A&I) . Diameter: 15.5" Mounting Holes: 2.5" centers Pilot Hole: 1.6125" Replaces: 521031M91