Melannco 21-Opening Collage Black Wall Hanging Photo Frames: Holds 21 Small-Size 3.25"x2.25" Photos This elegant modern 21 opening collage photo frame displays 21 small-size 3.25"x2.25" (8.3x5.7 cm) photos, 11 horizontally and 10 vertically. Comes with 4 back hooks for easy horizontal or vertical wall hanging. The perfect trendy gift or Wall-hanging home decor. Entire frame measures 23.25" x 10". A Melannco Collection.