This Alfresco Middle Shelf is designed for use with the Alfresco Versa Sink System (model AGBC-30). The modular system allows you to customize the basic Sink System to suit your exact needs and entertaining style. Easily snap on and off of the main sink without tools so you can re-configure at your convenience. This middle shelf must be used with HS-30 (Serving Shelf with Light) or PR-30 (High Shelf with Pot Rack & Light)