Office Supply Co Refillable Display Books are an ideal way to hold and display your documents. Clear, durable polypropylene pockets keep your paper and documents securely protected. Add, swap or remove pages as required by releasing the spiral spine inside the book. Black colour. A3 size. 20 pockets. 40 page capacity. Refillable with SP03 OSC Copysafe Pockets (Display Book Refills) A3, Pack of 10.