Over 104 Pieces Open Windows™ Kits pack pages of pre-cut embossed windows with themed papers, embellishments and more into one easy-to-use kit. Based on the Open Windows scrapbook matting system, Open Windows Kits build beautifully composed pages in just three easy steps: pick photos or other items; choose a coordinating mat and mount the photo to the mat; then mount the mat to the back of the frame. Finish pages with the kits themed papers, vellums and embellishments, such as tags, washers and alphabets from die-cut card stock. Each Open Windows Kit includes four 12-inch by 12-inch pages with coordinating mats, as well as themed papers, vellums and embellishments, for making four complete pages."