JAM Paper Translucent Vellum 8.5″ x 11″ Multipurpose Paper, 17 lbs., 100 Brightness, 500 Sheets/Ream (1379) Shop

Opacity, based on a 100-point scale, measures the translucency of the paper. For example, if a sheet of paper has 80% opacity, 80% of light cannot pass through. Paper with a higher opacity is preferred for double-sided printing.

Caliper, expressed in points, refers to paper thickness. Each point represents a thousandth of an inch. For example, 5 points equates to a thickness of 0.005″.

Acid content determines how long the paper or product will last before breaking down. The acid level is measured by the pH (potential of hydrogen) on a scale from 0 to 14. Acid Free (alkaline) paper has a higher pH (above 7), has a longer life expectancy, and is less likely to discolor and break down over time.

Items of a particular grouping, as merchandised and labeled by a manufacturer

Paper weight, stated in pounds (lbs.), is calculated by weighing a ream (500 sheets) of the basis size (master uncut size) of that paper type. For example, the basis size of bond paper is 17″ x 22″ with a ream weighing 20lbs; the basis size of watercolor paper is 22″ x 30″ with a ream weighing 140 lbs.

Actual manufacturer name for the color of the product.

The primary color of the product