Ventilation Maximum 301-12-G Roof Ventilator, 20 in OAL, 12 in OAW, 1000 to 1200 sq-ft Net Free Ventilating Area, Gray

The model VMAX-301-12 has been designed for slope roof application and is compatible with most all types of roofing membrane including metal. It has no moving parts, requires no electricity and is completely silent and maintenance-free. Built tough to endure the harshest weather conditions that nature has to offer including hail storms. It sits high enough off the roof deck to allow it to weather through snow accumulations without being covered, thus, finally giving the home owner a peace of mind.