If you are looking for CHEAP, I developed a similar system 15 years ago using inexpensive plastic conduit ($1.20/10 ft). Cut it into appropriate lengths, then saw a slot into it on the table saw. Two small holes near either end to hang on two 6p finishing nails on the wall. Keep print in slot by attaching crack & peel foamboard strip to edge of print.
Oh, yes, I paint the conduit, because it comes in gray with printing on it. Comes in various diameters!