The MGR is a Low Profile Hooded Modular Gravity Ventilator sized and designed for relief applications. Provides natural gravity ventilation in roof mounted installations.
Sizes (square or rectangular throat sizes)
8 to 180 inches (205 mm to 4575 mm)
Airflow to 109,000 CFM (185,200 m3/hour)
Static pressure to 0.3 inches w.g. (80 Pa)