What is GSM?

GSM stands for grams per square metre and indicates the weight of paper, board, fabric, or other sheet material over a defined area. It is commonly used to compare packaging material thickness and weight characteristics. Higher GSM can indicate a heavier or more substantial material, although actual strength also depends on construction and composition. GSM is frequently specified for paper bags, cartons, corrugated liners, and woven packaging. Buyers can use GSM as one factor when selecting packaging material.