Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E1225E12B1 found under Fan Tubeaxial by Mechatronics Inc. The National Stock Number assigned to this part is 4140014448810, and the Federal Supply Class is 4140 Fans Air Circulators And Blower Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like E1225E12B1.