316-grade stainless steel CableRail Kits include all of the attachment fittings and come prefabricated in standard lengths that can be trimmed to length in the field. All post and pickets come pre-drilled, ready for cable installation. A vertical intermediate picket is used mid-span to minimize cable deflection. Bottom rails are recommended for 42-in high frames and are optional on 36-in and 38-in frames using horizontal cable infill.