So, my architect wants me to specify an access door in a tiled shower. The wall is 1 hour rated. Does such an animal exist?
JL Industries makes a 2 hour recessed insulated access panel that can receive a tile finish and has a smoke gasket option that should work against incidental moisture. https://www.activarcpg.com/product/fd2ct-series-2-hour-insulated/
Alternatively, you might consider this Acudor model, but I don’t think it has a seal:
https://www.acudor.com/products/fire-rated-access-doors/fb-5060-td