This Avantco 193GLS72T bottom glass shelf is a direct replacement for the one that came standard on BC-72-HC, BCD-72-HC, BCT-72, and BCTD-72 72" bakery cases. This part contains a glass pane that can be used to replace the one that came standard on your unit. If you notice any cracks or chips in your shelf be sure to replace it promptly, as this can present issues with food safety and make for an undesirable presentation for customers.