Sweco Fab, Inc. designed and manufactured two 5,000 lb. air intake stacks and two 300 lb. dampers for an oil refinery in Baytown, Texas. The air intake stack is designed to keep debris from traveling to the duct. It was manufactured from A-36 carbon steel and measures at 11’x 5’x 8.’ The damper is designed to control ventilation in the ducts. This damper is manufactured from galvanized carbon steel and measures at 73.5″ I.S. x 20.5″ I.S. x 7.5″ wide.