The three lugs at the bottom of the plate do NOT fit the original Sharp R-242 tri arm turntable.
The 270 mm diameter of the microwave plate fits fine however the 'universal' lugs at the bottom of the microwave plate do not fit the original plastic tri arm rotating holder meaning it would be very easy to drag a heavy hot item that has just been cooked off the plate and dragging the microwave plate too. As the lugs don't fit or secure the dish to the rotating tri arm carasel causing that to be dragged out with the luckily hood of it smashing on the ground. Asked for a return label and refund processed very quickly however I would like them to edit the description to remove suitable for Sharp R-242 as it isn't really.