Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R6-1100 found under Tube Air Cooler by Unifin Intl Div Of Wabtec Canada Inc. The National Stock Number assigned to this part is 4130013976009, 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 R6-1100.