Product review (5 stars): Noise Reduction: XLNT  But very flimsy
XLNT for noise reduction but it's very thin and flimsy. Comes out easily and frequently but it's very easy to re-insert. Waste food consistently needs some pushing to get through. I understand that these are compromises necessary to achieve its superb quiet level, which I gladly accept. Note that it's a special new small diameter size that doesn't fit older Insinkerator models. I hunted for one at True Value hardware shop in my area and the manager was clueless about this, telling me that his aftermarket 4" diameter, thick and heavy copy would work, which was wrong. Amazon price is 20% lower than Insinkerator.com.