Boorum & Pease Series Columnar Book, 6 Column, 150 Page, Black/Red (1602 1/2-150-6) Black cover with durable red spine and corners Waterproof and permanent ink Double page form. Unit ruled for neat record keeping 12 Column 12 1/4 x 10 1/8 Inches Black cover with durable red spine and corners Waterproof and permanent ink Double page form 12 1/4 x 10 1/8 Inches, 12 Column Double page form. 12 Column Extra-Durable Bookstyle Bound Columnar Books Thread-sewn for durability and a flatter writing surface at binding margin. Permanent, waterproof inks. Unit ruled. Table of Contents page.