Anodizing Metal Roof Solar Panel Clamps Standing Seam Tin For Frameless PV Module Mounting Structures Descriptions of Aluminum Solar Panel Clamps: The clamp can be snapped into the desired position of the rail section and holds the PV module. The height can be adjusted to the frame height of the module using a hexagon socket screw. Features: Flexibility: roof mount, pole mount, ground mount, ballasted mount, etc both for on grid and off-grid systems, for framed and frameless