This is a shelf, or warming rack, intended for use with microwaves. This shelf allows a place to set the items being warmed. With regular use, the shelf may get damaged. The shelf could also get misplaced. If there is a missing or broken shelf, the part should be replaced with a genuine OEM replacement part to continue the efficient performance of the appliance.Visual inspection of the shelf inside the microwave will quickly determine if the part is missing or broken. Replacing a damaged or misplaced shelf is a quick and straightforward process. Remove the old shelf and slide the new shelf into the proper position. Continue regular use of the appliance. Make sure that the metal shelf is not touching any part of the appliance on the inside, including the sides, top, or bottom.This shelf is an authentic OEM replacement part. It is made of high-quality, durable materials. The shelf is sourced directly from the manufacturer. This shelf for microwaves is compatible with several different models of appliances. It can be installed in many brands of microwaves, including devices produced by Kenmore, LG, Amana, and General Electric.5026W1A048C (AP4443778) replaces 1342378, 5026W1A048B, AH3526025, EA3526025, PS3526025.