Ideally suited for a wide range of indoor applications, simply lift the front to tilt SNA's Portable Aluminum Indoor Bleachers onto stable 4-inch casters for easy transport. When in use, bleachers rest on non-marking rubber feet. Unit features fully welded, hot dip galvanized support structure with heavy-duty 2-inch x 10-inch anodized aluminum seat and foot planks. Bleachers carry a five-year limited warranty on steel structure and two-year limited warranty on planks.