Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 1508-1 REV B ITEM 34 found under Filter Element Air Conditioning by Adrick Marine Group Inc. The National Stock Number assigned to this part is 4130014456515, 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 1508-1 REV B ITEM 34.