The Sharp Microwave FGLSPA076WRYZ Ceramic Shelf(M# R21HT) is a heavy-duty interior tray designed to provide a flat, stable surface for food containers inside commercial microwaves. Installed directly onto the cavity floor, it works by allowing microwave energy to pass freely through its non-conductive ceramic composition while evenly absorbing and distributing baseline thermal energy ... https://partsfe.ca/fglspa076wryz-sharp-microwave-shelfceramic-m-r21ht