Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4A12181-104B found under Duct Cargo Compartment by Eaton Corporation. The National Stock Number assigned to this part is 1560003590088, and the Federal Supply Class is 1560 Airframe Structural Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4A12181-104B.