Standing choral risers are constructed of high-quality plywood and steel. These risers unique is that straight and wedged sections can be combined together easily to form different configurations. The 4-Tier Standing Choral Riser Bundle – 19′ Long consists of (1) 6-foot wide 4-tier wedged choral riser unit sandwiched between (2) 6-foot wide 4-tier straight choral riser units. Each unit consists of 4 separate 6’w x 18″d riser panels in 8″, 16″, 24″ and 32″ heights. They are available in a Carpet or Industrial finish and with or without rear and side guard rails. This choral riser configuration accommodates 45 to 56 people (56 on risers only, 70 including ground-level row).