 | Cambridge Engineering, Inc. (Chesterfield, MO) 100% efficient, direct gas-fired, non-recirculating make-up air heaters with patented Cambridge burner and VFD controls. Used in warehouses, manufacturing plants, paint booth areas, foundries, automobile/truck service areas, parking garages, aircraft hangars, boat storage facilities and commercial kitchens. Ratings up to 8000 MBH and 75,000 CFM. | |