Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R1RB80S1MOD found under Fan Ventilating by Zero Corp. The National Stock Number assigned to this part is 4140007628989, 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 R1RB80S1MOD.