Hartzell Air Movement has redefined the power roof ventilator with a unique advantage to decrease service time while eliminating the risk of moisture. The addition of a zero-leak service door which moves both the propeller and motor out of the airstream has a significant impact on quick service, according to the company. For more information, visit www.hartzell.com.
Power Roof Ventilator
Hartzell Air Movement
![Power Roof Ventilator](http://www.roofingcontractor.com/ext/resources/Products/Swing-out-door-feature.jpg?1345649959)
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