Berridge Zee-Lock standing seam metal roofing system is a Mechanically-Seamed structural panel, with a exposure and a high seam, for use over open purlin framing or solid sheathing on straight or curved applications. Continuous Zee-Rib clips, with Berridge's patented Vinyl Weatherseal, provide superior uplift performance. Seam may be single-locked (90°) or double-locked (180°) using Berridge's mechanical seamers.