27 foot 4 row portable school bleachers are a great size portable bleacher for weekend sporting or town events.  At 27 feet wide x 4 rows of 2 x 12 anodized aluminum planks, this bleacher seats 72 adults and is only 30 Inch high. This light weight bolted aluminum frame provides strong joints that will not develop weld cracks. The low rise is 6 inches per row which is comfortable for adults and children. NOTE: Please check your local building codes to determine required specifics for portable bleachers.