Purlins for trapezoidal sheet

The bridge is used for mounting photovoltaic panels on a roof covered with trapezoidal sheet metal. The bridge is lined with an EPDM seal to ensure tightness between the roof and the panels. We use bridges with heights of 20mm, 30mm, 40mm, 60mm, and 70mm. The standard length of the bridge, sufficient for proper installation, is 330mm. The bridge is fastened to the roof using 4 EJOT screws, type JF3-2-5.5x25.