vPlume™ is a High Plume Lab Exhaust System that ensures a greater level of safety and health by propelling contaminated effluent higher into the air stream where it becomes diluted before contaminants can settle back to the building envelope or ground level. PennBarry’s vPlume is the only velocity stack fan featuring an aluminum non-overloading airfoil wheel, providing higher efficiency and performance. The vPlume offers industry leading sound performance.