PRODUCT INFORMATION Berridge Zee-Lock standing seam metal roofing system is a Mechanically-Seamed structural panel with a 16" exposure and a 2" high seam. 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. Berridge Zee-Lock may be site-formed in continuous lengths with Berridge’s SP-21 portable roll former and curved on-site using the ZC-21 curver.