Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number VDH-26M found under Heater Duct Type Stationary by Valad Electric Heating Corp. The National Stock Number assigned to this part is 4520010884440, 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 VDH-26M.