Two identical black 14×20 Epic frames, matted to 11×17, hung one above the other — a 45-inch column for the narrow places a row will not fit: the wall beside a door, the end of a hallway, above a bench or a slim console.
Stacked frames read as one tall piece and draw the eye up, which is exactly what a low or narrow wall wants. Same frame, same mat, one gap to keep even — the simplest two-nail gallery there is.
Hanging note: centre the gap between the two frames at about 60 inches from the floor so the column sits at eye level; above a bench, start the lower frame 8–10 inches above the seat back.