Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number L-1-12X12X6IN found under Lateral Air Conditioning Heating by United Mcgill Corp. The National Stock Number assigned to this part is 4520010378358, 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 L-1-12X12X6IN.