Tip and roll bleachers are ideal for indoor use. All aluminum seat boards and underframe provide a lightweight, stable bleacher that is easily supplied for easy mobility. These bleaches are a great addition to any field or facility. The seat boards are 10 widths of non-slip aluminum. The plates are supported by a strong aluminum structure. The transition foot prevents marking the floor. Includes 4 marginless caster wheels. Size: 27 and 2 rows. All sizes ship by truck.