Products / Inter-Lock IL20

Inter-Lock IL20 is a structural standing seam panel that is snapped together during installation using an integral interlocking system, installing in one direction from a starting point, with an optional double male starter panel for symmetrical layouts. The product page prints 24 and 22 gauge steel, .032 and .040 inch aluminum and 16 and 20 ounce copper, seam spacings of 12, 16 and 18 inches (IL2012, IL2016, IL2018), a minimum slope of 3:12, and a factory-applied non-curing sealant option. It lists performance tests to UL-580 wind uplift, ASTM E1592, ASTM E331 and ASTM E283.