My 310 toilet started leaking from inside the foot pedal couldn't find a replacement part I needed. And saw the 320, I like elongated toilets much better. We have them in all bathrooms at home . It fit perfectly. Then the faucet in the bathroom sink. It was working just fine . But it looked like it might have costed $ 5.00 . Plus it didn't give much room to put your hands under the water . Found one on Amazon. It is well built and easy install. We are very happy with both items.