Roof Louvers:

These entry level roof ventilators have a 6-inch exhaust hole and can be used as an attic, kitchen, and bath vent.

Turbines:

With a 12-inch exhaust hole, the Lomanco Whirlybird is the best brand of turbines. It is tested to withstand winds of up to 147 mph, and is fitted with permanently lubricated upper and lower ball bearings to ensure that it never stops spinning and never needs maintenance.

Ridge Vents:

When it comes to roof exhaust ventilation, there is nothing better than ridge vent. These concealed vents are installed along the ridge line and under the ridge cap and have a 3-inch linear exhaust along the ridge. This design allows for more pieces of the ridge vent to fit on your roof, creating the best air flow.