Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GRUPFS440V3500W found under Heating Element Electrical Immer by Gruenberg Oven Company. The National Stock Number assigned to this part is 4540004828288, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GRUPFS440V3500W.