Listing is for a Ruud Rheem Weatherking Corsaire 46-24124-03 120 volt primary 24 volt secondary 40va transformer.  transformer is also under a Basler Electric BE28289001 part number.  Transformer has been removed from a working furnace that was replaced and tested by a certified HVAC technician.  If you have any questions, feel free to ask.  Item will ship promptly using USPS, UPS, and FedEx services.