This 3 Tiered wedged Seated Choir Riser is constructed from x4 Staging 101™ wedged platforms that align with SEP20 and SEP4060 platforms. Each tier is set at tiered intervals of 20cm, 40cm and 60cm. Available in a black or grey carpet finish or black hardwearing, anti-slip finish. Each level is built from heavy duty steel construction and 18mm sandwich plywood offering a sturdy, safe and stable seated riser for your performers. Capable of supporting approximately x6 standard chairs elevated.