When evaluating Raschel Mesh, you must prioritize material composition, typically High-Density Polyethylene (HDPE) or Polyester, depending on the application. Key metrics include GSM (Grams per Square Meter), which determines durability, and mesh size (hole dimensions), which affects airflow and visibility. For outdoor use, ensure the product has UV stabilization (typically 3-5% UV additive) to prevent degradation from sunlight. Additionally, verify the bursting strength and tensile strength to ensure it meets the load-bearing requirements of your specific use case.