Frame Amo 16x24 Walnut Brown Picture Frame with 11.5x17.5 White Mat Opening for
The mat has a 11.5x17.5 opening for 12x18 picture which you can tape to the back of the mat. Plexiglass/Acrylic (NOT GLASS) Front Face. Wood Composite Material. All Mats are acid-free and lignin-free.