NSGV provides products for garage ventilation exhaust systems to ensure the health of your employees and maintain and increase the efficiency of your mechanics by creating a healthier working environment. Since 1946, National System has manufactured carbon monoxide, diesel, and welding fume removal systems for auto and truck dealerships, service centers, implement dealerships, motorcycle dealerships, and woodworking shops across the United States and throughout the world. Specialty products include blower accessories, dust collection, vehicle exhaust, and welding exhaust.