Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E100-13-3X4 found under Float And Arm Drain by Ecolaire Heat Transfer Co. The National Stock Number assigned to this part is 4620003437276, and the Federal Supply Class is 4620 Water Distillation Equipment Marine And Industrial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like E100-13-3X4.