Yes there are whole seats, and henge and mounting parts in stock in the store.
If they don't have anything in stock, you can order what you need thru them for your convenience.
Schwerings is the place to get any hardware information you need. They are infinitely more helpful than the Lowes and HD employees that tend to run the other direction like deer when you attempt to approach them. And even if you manage to corner one the rarely seem to be much help.
Have you considered using door hinges? 🚪
Not sure about hinges. You can get a new seat.
I feel schwerings is way better than lowes or homedepot espesially if you actually want help. But yes they will have what your looking for
I believe they do. Call them. It's a great hardware store
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