Downblast Vent, Direct Drive, 18-1/2 In

Energy Saving Units Feature Ec Motors Which Allow up to 80% Useable Turndown, Fresh Outside Air is Drawn In Under The Motor Cover to Maximize Motor Life, Fully Rolled Windband Bead For Increased Stability and Easy Transport, High-Efficiency Brushless DC Motor, Motor Features Potentiometer Dial for Speed Adjustment, Nema 1 Junction Box Located in Motor Enclosure, Nonoverloading Centrifugal Wheel Design, Optional Nema 1 And 4 Disconnects Available

9.2 sones @ 0.750 in SP and 5 ft, 8.4 sones @ 0.875 in SP and 5 ft, Fan RPM 730: 7.4 sones @ 0.000 in SP and 5 ft, 8.7 sones @ 0.125 in SP and 5 ft, 7.2 sones @ 0.250 in SP and 5 ft, 7.4 sones @ 0.375 in SP and 5 ft, 6.7 sones @ 0.500 in SP and 5 ft, Fan RPM 810: 8.8 sones @ 0.000 in SP and 5 ft, 9.9 sones @ 0.125 in SP and 5 ft, 8.7 sones @ 0.250 in SP and 5 ft, 8.4 sones @ 0.375 in SP and 5 ft, 8.2 sones @ 0.500 in SP and 5 ft, 7.5 sones @ 0.625 in SP and 5 ft, Fan RPM 900: 11.3 sones @ 0.000 in SP and 5 ft, 11.7 sones @ 0.125 in SP and 5 ft, 10.9 sones @ 0.250 in SP and 5 ft, 10.2 sones @ 0.375 in SP and 5 ft, 10.1 sones @ 0.500 in SP and 5 ft, 9.7 sones @ 0.625 in SP and 5 ft