Product review (2 stars): Avoid this
This splash guard is too large for the throat of my Waste King 3300 disposer. I can force the guard in, but only by using both hands. And the opening in the center of it is too small. Water backs up in the sink, and vegetable waste has to be manually pushed through the guard, it doesn't just wash through.  The sink stopper doesn't fit into it, probably because the splash guard is so compressed. In short, this is nothing at all like the original splash guard.

I can say one positive thing. Because it tightly blocks the throat of the disposer, it muffles the sound, and the disposer is noticeably quieter.