Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ID40CT found under Driver Loudspeaker by University Sound Inc. The National Stock Number assigned to this part is 5965009888768, and the Federal Supply Class is 5965 Headsets Handsets Microphones And Speakers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ID40CT.