Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AV145E4020-39 found under Blanket Sound Contr by Desco Corp. The National Stock Number assigned to this part is 1680012271810, and the Federal Supply Class is 1680 Miscellaneous Aircraft Accessories And Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AV145E4020-39.