Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SM150 found under Filter Element Air Conditioning by Purolator Products Co. The National Stock Number assigned to this part is 4130009375796, 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 SM150.