The Lyons 3 Step Standard Folding Riser are a must for any standing performing group. The Lyons Standard Folding Riser set up quickly and conveniently with an easy to operate locking mechanism that provides increased stability and safety. Each step is 3/4" solid core plywood covered with long wearing pile carpeting and aluminum edging for quietness and slip-resistant protection. Backed with a 5 Year Warranty, The Lyons 3 Step Standard Folding Risers are available in Standard or Reverse Taper. Use Standard Taper Units for a semi-circle layout or use a combination of Standard and Reverse Taper Units for a straight-line layout.