This Avantco 178GSKT15751 gasket serves as a direct replacement for the gasket that came on your glass door stainless steel reach-in refrigerators and freezers. The gasket is an important part of your unit, creating a tight seal between the door and the interior. A torn gasket can limit your unit's ability to lock in cold air, which in turn forces the refrigeration system to work harder to maintain specifications. Be sure to fix a broken one promptly. This part is compatible with select Avantco Z1-R-G units.