Bemis has a weird setup that does not allow normal hinges that you can buy at the hardware store. But I found a manufacturer that offers the exact hinges you need for most of Bemis’ models.
Jabsco 29098-2000
NOTE, The above hinges do NOT come with screws!
You will need #6 x 1/2in wood screws. The ones below are stainless steel, which are better than the original screws. The original screws tend to rust and then break. But stainless steel will not rust.