Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number L16999-12J found under Diffuser Air Aircra by Gulton Industries Inc. The National Stock Number assigned to this part is 1660010180564, and the Federal Supply Class is 1660 Aircraft Air Conditioning Heating And Pressurizing Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like L16999-12J.