This Avantco 17812660 10" fan blade is a perfect replacement for the one that came with select A-49F-HC, GDC-24F, GDC-40, GDC-69, and SS series units. It is a vital part of your unit's refrigeration system, working with the other components to help your unit dissipate heat and keep the cabinet set to the right temperature. A broken or malfunctioning fan blade can prevent your unit from maintaining specifications and cause strain on other components, so be sure to replace it promptly.