Ideal if the locating tabs have broken rather than replacing both frame and insert.

Frame only

THIS DOES NOT INCUDE THE MIDDLE INSERT.

This is just the frame that holds the white cover. 

Samsung part number: SAM.DE63-00315A
The stirrer cover fits into the top of the microwave. The ceiling plate or grease shield protects the stirrer above from contamination from food debris. the cover stirrer also protects the stirrer from damage. 

Samsung CM1619 commercial microwave oven,

Samsung CM1629 commercial microwave oven,