Our database system is telling me that we have 5 of these in stock as of right now. The SanaGloss on this toilet is a great feature! It keeps the toilet cleaner longer!
They have the same size flush valve 3-1/2" but then you have a choice of either 1.28 gpf or 1.6 gpf. This is noted in the model number by the letter "S" (1.6) and "E" (1.28)