ONAN TRANSFORMER 315-0470 480V / 120 V , 1000V FITS ONAN GTU TURBINE NOS MARKED NM1 460A Weighs about 33 pounds. Approx dimensions are 6-1/2" wide by 5-1/2" high by about 5" I don't know anything else about it, please let me know if you know what this one is for. LUCKILY I CAN SHIP IN A FLAT RATE BOX. New Old Stock, never used. AND other auctions and put me on YOUR FAVORITES. NOS means new old stock. This item has been in surplus storage for years. The box may be tattered or the item may be a bit dusty but fully functional. If you are not satisfied with the condition or your item please contact me immediately. All items are new and unused. I am selling this item "AS IS" with a "no return policy" unless stated otherwise in the body of the ad. I will answer all emails to the best of my ability. I am not an expert concerning much of what I sell but I do have a certain amount of "resourcefulness". Please send part numbers when inquiring about certain parts. An educated buyer is my best customer. Thank you. ... Mike ...