What is the largest perfect bound book you can produce? July 12, 2019 19:46 Updated Follow The largest perfect bound book we can produce is 13" x 10" (open size of 26" x 10"). Related articles Can I order perfect bound booklets with blank inside pages? What is the thickest perfect bound book you can produce? What is the smallest perfect bound book you can produce? What are perfect bound books? Inside Pages Setup for a Perfect Bound Book