The short top boxes have removable, close-fitted tops to seal out dust and insects. Embossed labeling areas on box end and lid front neatly, accurately and consistently locate and position standard pressure-sensitive (PSA) identification label. Short top boxes are manufactured from.040 and.060 tan-finished, acid- and lignin-free Archival Grade boxboard. Metal edge clamps are corrosion treated in black polyester coating with wax-free polyester on the blind side. Clamps provide rigidity and high stacking strength. Made from fully bleached, high alpha cellulose pulp. It does not contain any post consumer waste recycled pulp. Paper is free of metal particles, waxes, plasticizers, residual bleach, peroxide, sulfur content is less than 0.0008% reducible sulfur. The lignin content is measured by the phloroglucinol test with a Kappa number of 5 or less.