Two identical black Streamline frames, 18×18 inches, each matted to 8×8, hung side by side with even 3-inch gaps — about 40 inches by 19 inches on the wall. A pair of squares for a shorter wall — about 40 inches across.
This is the wide-mat look: a small photograph or print sitting in a generous white border, so the frame carries the wall and the picture stays intimate. Because every frame is the same, the set needs no layout planning — level the row, keep the gaps equal, and the repetition does the work. Sized above a bench, desk or nightstand pair.
Hanging note: hang the row with its centre at eye level (about 57 inches from the floor) and check the first frame with a level — the rest follow from it.