If the bottom and top lids on your Avantco DFC20-HCL ice cream freezer become cracked or damaged, replace them promptly with this Avantco 36031082 set of glass top and bottom lids! The glass lids on your unit lock in cold air and allow your freezer to run at maximum efficiency while providing a clear view of contents. It's important to be sure that the lids close snugly and to replace them if this is an issue. Broken glass on a lid is also a safety hazard for you and your customers.