This Advance RELB-2S40-SC Fluorescent 120V Ballast (2-Lamp) F40T12 is a top-quality product that is perfect for your facility lighting needs. It is suitable for use with any lighting ballasts and starters and comes with one unit in the package. This product is manufactured in an unknown location and does not contain any California Prop 65 Warning label. Rest assured that you will be receiving a high-quality item that will meet your lighting needs.