The siFramo 100 U-Holder is a pre-assembled component used to clamp Beam Section F100 to the flange side of traditional steel sections. Type SB F 100/160-40 comes with the holder with thread M12, the plate, (2) Beam Clips SPA 5P AU, and (2) hexagon nuts M12. U-Holders can be used in pairs. Type 40 is used for applications with up to flange thickness 40 mm.