Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 50-001104-18D CHG B ITEM 145 found under Ventilator Air Circulating by Tomkins Industries Inc. The National Stock Number assigned to this part is 2040014202835, and the Federal Supply Class is 2040 Marine Hardware And Hull Items. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 50-001104-18D CHG B ITEM 145.