How many roof turbines do I need

To determine how many turbine vents do i need, measure your attic’s square footage, use 1 square foot of ventilation per 300 square feet of attic space split between intake and exhaust, and divide by a turbine’s capacity (typically 1200-1500 sq ft), resulting in approximately 2 turbine vents or whirlybirds for a 2000 sq ft…