Unfortunately, you have to get this or a similar toilet seat from Toto to go with the Toto toilet I bought. And I HATE plastic toilet seats - this toilet seat reminds me of something that you would find in a hospital or an old folks' home. Don't get me wrong - it looks nice and installed just fine. And if you don't mind plastic, then I am sure that it will be just fine for you. I just wish that for [$], they came up with something that didn't feel so cheap.