Product review (5 stars): Perfect for your newer InSinkErator Disposal
This is the exact replacement for the newer InSinkErator garbage disposals - this is the type that fits inside of the next - you would remove the old one by pulling it directly out from the top and inserting the new one to fit around the lip - you do not remove the garbage disposal to replace/insert this.  So if you have the older style (or a non-InSinkErator disposal) that requires you to remove the disposal from the neck to get to the plastic baffle, this will not fit properly.