Have often found it ironic how easily the public accepts insanely expensive paintings with zero surface protection, but then gets nervous about unprotected photographic prints. It's right up there with super-fussy, painfully assembled, archivally perfect, multiply matted framed prints selling for hundreds, versus prints glued onto plex and sold for millions.
Those open face frames are easy to make with
floater frame moulding, which is "L" shaped. Mount the the image on a flat board, and attach it to the inside of the frame with screws put in from the back of the frame. Piece 'o cake. The moulding in the picture is probably too small, but floater moulding comes in a range of sizes from every moulding supplier.
Even the plastic versions of floater moulding look extremely good on the wall, while being dirt cheap. Unfortunately most framers don't have a clue how to deal with it and will assemble it like it was wood and the frames will fail the first time they are handled.