Standing Seam "Nail Flange" DSS-100 Concealed Fastener Panel16″ Coverage1″ SeamsAvailable in 26ga and 24ga Steel, .032 AluminumStriations StandardEnd Notching StandardQuick Reference GuideSell Sheet Download PDF "Snap Lock" DSS-675 Concealed Fastener Panel16″ to 24″ Coverage1.75″ SeamsAvailable in 24ga, 26gaStriations StandardEnd Notching StandardQuick Reference GuideSell Sheet Download PDF "Mechanical" DSS-210 Concealed Fastener PanelMechanically Seamed Ribs12 to 24″ Coverage2″ RibsAvailable in 24ga, 26gaStriations StandardEnd Notching availableQuick Reference GuideSeaming Video Guide Download PDF