.. Framesare 100%welded aluminum angle.. Bleachers include commercial grade 9 gauge steel mesh guardrail system.. Features 2" x 10" anodized aluminum seat planks and 2" x 10" mill finished foot planks.. Both double foot planks and riser boards on rows 4 and above for extra safety.. Safety end caps - no sharp edges to snag clothes or skin .. Some assembly required.. Due to constantly changing specifications, please check local building and safety codes to ensure compliance. ..