Staging 101 Straight Seated Risers are constructed high quality plywood and steel and feature a 10 year warranty. Seated risers are 8’ X 4’ (2.4m x 1.2m ).What makes Staging 101 risers unique is that straight and wedged sections can be combined together easily to form different configurations (many competitor’s risers do not have this option). 3 Tier Seated risers consist of 3 seperate riser panels in 8″, 16″ and 24″ heights. They are available in a Carpet or Industrial finish and with or without a rear guardrail option. Please choose from the options available.