Listing is for a Trane American Standard C340041P04 115 volt primary 24 volt secondary 35va transformer.  Transformer is also under a BE25214009 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.