KEY DETAILS Wood or powder-coated metal frames. 12x16, 12x12, 16x20 frames: Tempered glass. 18x18, 18x24, frames: Acrylic. 2 removable, acid-free paper mats included with each frame. Can be hung vertically and horizontally. D-rings included. Set of 5 includes: two 12x12 frames, one 12x16 frame, one 18x18 frame and one 18x24 frame. 12x12 Frame (2): holds one 4x6" or 5x7" photo. 12x16 Frame (1): holds one 5x7" or 8x10" photo. 18x18 Frame (1): holds one 4x6" or 5x7" photo. 18x24 Frame (1): holds one 8x10" or 11x14" photo. Made in China.