The Caldwell Group's Dura-Mod Modular Spreader Beam is a versatile, lightweight alternative to fixed and multiple point below-the-hook solutions up to 170-ton capacity. Each system will consist of a pair of end fittings and drop links, and two upper and lower shackles to make the shortest possible configuration. The user simply combines intermediate spreader sections to achieve the required span. The single longest component is only 20 ft. For square or rectangular spreader frames, remove the end fittings and add corner sections—the struts are the same. A full assembly procedure is provided on the data sheets along with details of fasteners and torque values. All Dura-Mod spreaders conform to ASME B30.20 and BTH-1 Design Category B, Class 0. The company plans to add Dura-Mod models to raise the capacity to 250 tons, and beyond. Dura-Mod is a new rigging concept for Caldwell, complementing the company's existing family of fixed beams, adjustable beams, beam end fittings and "build your own" spreaders.