TOTO CS230 Series TC291#SC1 Soft-Close Toilet Seat, Pastel Ivory

This is a toilet seat and lid for elongated (large size) toilets with a lid length of 47cm.
We purchased it from a contractor along with the toilet bowl, but it was leftover as we used our existing bidet toilet seat.

We believe one set of the mounting gasket and nut is missing. We kindly ask that you reuse the ones from your current seat.