Located in North Central California along the Sacramento River and American River lies Sacramento, the state capital of California. Residents enjoy one of the most productive agricultural areas in the world, and their diverse ethnic backgrounds enrich the city's lively cultural scene. Products manufactured in Sacramento include Greenheck fire dampers, smoke dampers, combination fire/smoke dampers, control dampers, and backdraft dampers. The louver products include extruded aluminum louvers, fabricated louvers, combination louver/dampers and penthouses. The Unison facility manufactures Innovent custom air handlers and Valent rooftop units.