Use the Avantco 17818647 front shelf support as a direct replacement for the one that came with your Avantco SS half door reach-in freezer or refrigerator! This shelf support installs onto the interior walls of the refrigeration cabinet and features vertical notches that hold the shelf rail and allow for height adjustments. The notches will also accept a bun pan rail (sold separately), which gives you the option of holding full size bun / sheet pans in the unit instead of shelves. Replace a worn or damaged shelf support right away so that you can take advantage of the full capacity of your unit to hold all of your food products!