The larger frame has glass. The two smaller ones do not.
The smaller frames are 7.3 inches x 6 inches. The larger one is 9 inches x 7.1 inches. The actual opening is 6 × 4
The larger frame has glass. The two smaller ones do not.
The smaller frames are 7.3 inches x 6 inches. The larger one is 9 inches x 7.1 inches. The actual opening is 6 × 4