These affordable and stylish picture frames from Viet Nam are light-weight & made to hang on the wall. There are turn buttons to close the plywood back against the glass, which is included. This style comes in 4 sizes, in descending order:

Picture area 25 x 6 3/4" (34 x 24 cm). Overall 27 1/2 x 12" (70 x 30 cm)

Picture area 18 3/4 x 9 1/4" (48 x 23.5 cm). Overall 21 1/2 x 14 7/8" (55 x 38 cm) 

 Picture area 16 5/8 x 9 3/4" (42 x 25 cm). Overall 19 1/2 x 15 5/8" (49.5 x 40 cm)

Picture area 16 x 5 3/8" (41 x 14 cm). Overall 18 1/2 x 11" (47 x 28 cm)