Adaptive Technologies Group BC16-21 Beam Clamp - 16"-21"Adaptives low profile channel style beam clamps anchor permanently to structural I Beams and provide a safe, predictable method for suspending loads from overhead. The channel style beam clamp is adjustable for beam flange widths ranging from between 16 and 21 (406 533mm). The body of the clamp mounts flush underneath the beams flange and is equipped with a loadrated swiveling shoulder eye bolt thatrotates in the direction of the load to minimize side