Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E-TECH-R106KABC found under Heat Pump Water Heater by Crispaire Corp. The National Stock Number assigned to this part is 4520012946071, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like E-TECH-R106KABC.