Our unique, accordion-style folding stage platform riser provides sturdy support for your platforms. Deceptively lightweight and compact, risers lock securely to platforms via our unique platform locking screws. Risers are available for step, square, rectangle, half, triangle or quarter round platforms in heights of 20, 30, 40 and 60 cm. 80cm risers are available for square and rectangle platforms. With riser extension hardware, risers can be stacked on top of one another increasing the overall height of your stage up to 1.2m. (for safety, never stack more than two risers).