Staging 101 Wedged Seated Risers are constructed high quality plywood and steel and feature a 10 year warranty. 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). 4 Tier Seated risers consist of 4 separate riser panels in 8", 16", 24" and 32" heights. They are available in a Carpet or Industrial finish and with or without a rear guardrail option. Please choose from the options available.