MB by MCSI-Gloss Post Bound Scrapbook: Memories. Perfect for storing your memories! Years of experience in the scrapbook and album business makes MBI a leader in style and quality. The 12 by 12 pages are acid free and distortion free. Each Page Protector with white paper insert holds 2 scrapbook sheets (front and back) for a total of 20 Scrapbook Pages. The page size is 12 inch by 12 inch and the overall dimension of the book is 12.5x13.5 inch. Refill scrapbook pages come with extra posts for easy expansion (refill # 899676).