Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SK33K-55 found under Plate Blower by Snowbird Environmental Systems. The National Stock Number assigned to this part is 4130015426914, and the Federal Supply Class is 4130 Refrigeration And Air Conditioning Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SK33K-55.