Fiberglass Dogbone of Transforer Used for the insulation spare parts of dry- type transformer. Model: Insulation ... : Epoxy resin. FiberglassThermal Grade: Class F. Class HThe sizes(mm): 5*5, 6*6, 7*6, 6*8, 8*6, 8*8 ... , 9*810*5, 10*6, 10*7, 10*8, 10*9, 10*10 ... ,25*16. Your samples and drawings are always welcome. Insulation FRP Pultruded Dogbone for Transformer