Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M11-1855 found under Ventilator Air Circ by Nmc Wollard Inc. The National Stock Number assigned to this part is 2540012834875, and the Federal Supply Class is 2540 Vehicular Furniture And Accessories. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like M11-1855.