MagneGrip exhaust extraction systems remove 100 percent of the toxic gases and particulates released by operating vehicles in firehouses and EM facilities. MagneGrip recently introduced a redesigned nozzle-assembly elbow that makes its systems even more efficient. The aluminum elbow, now five inches in diameter, has a redesigned elbow angle that provides greater airflow efficiency and less static pressure. Five inches is the same dimension as most fire apparatus tailpipes. In addition, MagneGrip's standard, heavy-duty hoses have five-inch diameters. The new elbow design-plus outside air entering through a one-way valve in the nozzle-practically eliminates wear on hoses by hot exhaust emissions.