Model Number: 1515
1515 Backward Inclined Wheel 15"
Bore Diameter 5/8 KEYED
Hole Size 10-5/16"
# of Blades 15
Rated 3450 RPM
Replaces such roof-top ventilator brands as: Chelsea, Green Heck, Acorn, and Penn Vent.
Backward inclined wheels are designed to pull air into the opening (hole size) and discharge on all sides. With this in mind we can often replace a CW rotations wheel with a CCW rotation wheel by simply reversing the motor rotation.