Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DFERS4501L295JS found under Fan Circulating by Rotron Incorporated. The National Stock Number assigned to this part is 4140000632724, and the Federal Supply Class is 4140 Fans Air Circulators And Blower Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like DFERS4501L295JS.