Get these aluminum bleachers feature all aluminum frames, seats and foot planks. Standard Bleachers feature single foot planks. Preferred Bleachers feature double foot planks. Swivel casters on the rear allow the bleachers to be tipped up and rolled for transport or storage. PriceBusterSports.com provides these non-marring footpads to protect your floor. 4 Row Low Rise Tip N' Roll Bleachers have a lower 6" rise between rows to keep the top seat under 30" and eliminate a guard rail system. 4 Row Low Rise Bleachers have a 12" high front row seat, 2 and 3 row bleachers have a 17" high first row seat. Bleachers come with clear anodized aluminum or powder coated colored seats. Shipped via ground truck.