Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number X8003 found under Cooling Coil Air Duct Type by Air And Liquid Systems Corporation. The National Stock Number assigned to this part is 4130004081316, and the Federal Supply Class is 4130 Refrigeration And Air Conditioning Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like X8003.