• Spiral-Bound in Blue Hard Covers
• Compatible with Use in ISO Class 5 (USA Class 100) Cleanroom Environments
• 50 Pages Per Notebook
• 50 Notebooks Per Case


College Rule. Our Lined (Ruled) paper is College Rule. It has 9/32 inches (7.1 mm) spacing between horizontal lines, with a vertical margin drawn 1 1/4 inches (31.75 mm) from the left-hand edge of the page.

College Rule Sizes: 3.5″ x 5″ (ISO /DIN B7), 5.5″ x 8.5″ (Half Sheet), and 8.5″ x 11″ (Letter Size) pages.

Grid Line. Our Grid Line (Graph) paper is Quadrille Ruled. It has evenly-spaced squares on the page. Grid Line Paper Notebooks are available with 8.5″ x 11″ (Letter Size) pages.


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