Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number IT4394B56-08 found under Hoseair Duct by Industrial Tube Company Llc. The National Stock Number assigned to this part is 4720016760400, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like IT4394B56-08.