Pressure relief panel system is engineered and fullycalibrated at the factory for release at very low design pressures. 

Designedto NFPA Guidelines, explovent panels are lightweight (less than 2.5 lb./sq.ft) in order to react quickly to pressure build-up. 

Explovent panels aretestable at any time, and unlike blow-out siding, Explovent is resettable after an event.