Choral risers 1.Simple setup and storage 2.Durable and stable 3.Lightweight but strong loading 4.SGS approved midwest choral risers &choir platforms Specification1.material: aluminum alloy 6061 T62.width: each step can be 30, 50, 80 or 100 cm 3. length: can be2m - 10m or even longer4. Height: original height range from 30, 50, 80 or 100cm (usually 5 steps)5. Main tube: 50*3MM square pipe or round ...
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