This Gallery Wall Frame set is 1- 30"x30" Aluminum Metal Picture Frame with: 36- 4"x4" cut outs in white mat board. All mat board ‘cut outs’ will be ½ inch smaller. As an example this frame holds an 8”x10” photo. The cut out will be exactly 7.5” x 9.5”. A slight overlap to allow for better framing practices. All sizing is measured in inches. Simple and easy, print out your favorite 36 Instagram photos and place them in you custom gallery frame. This frame is aluminum & plexi glass cover. Easy install instructions included with interchanged frame. **Custom Matting Available upon Request**