Abstract: The technology described herein includes a four-column shelving unit. One or more improved tie bars run between the front and rear shelf-support beams. The one or more tie bars are installed perpendicular to the shelf-support beams. The improved tie bar may take the overall form of a V-channel with a novel tri-notch connection on either end. The tri-notch connection allows the tie bar to connect with a front shelf-support beam on one end and a back shelf-support beam on the other end. The tri-notch connection includes two bottom notches and a top notch. The top notch may form a gap in the V-channel that allows the end of the tie bar to slip under a shelf-support flange on a shelf-support beam during installation. The two bottom notches are sized and shaped to receive an upward facing retention flange located on the bottom flange of the shelf-support beam.

Abstract: A four-column shelving unit with knockdown bracing running between the front and rear columns to form an end frame. The shelving unit comprises end frames formed by connecting a front column and a rear column to each other with knockdown bracing. The knockdown bracing may comprise a diagonal knockdown brace, a top knockdown brace, and a bottom knockdown brace. The knockdown bracing transitions from the knockdown state to the assembled state by pivoting on a hinge that connects one end of the bracing to the column. To complete assembly a pivot screw or other connector may be used to secure the unhinged end of the knockdown bracing to the opposite column. In an aspect, the top and bottom knockdown bracing are hinged within a first column, while the diagonal knockdown bracing is hinged within the second column.

Abstract: The technology described herein includes a four-column shelving unit with knockdown bracing running between the front and rear columns to form an end frame. The shelving unit comprises end frames formed by connecting a front column and a rear column to each other with knockdown bracing. The knockdown bracing may comprise a diagonal knockdown brace, a top knockdown brace, and a bottom knockdown brace. The knockdown bracing transitions from the knockdown state to the assembled state by pivoting on a hinge that connects one end of the bracing to the column. To complete assembly a pivot screw or other connector may be used to secure the unhinged end of the knockdown bracing to the opposite column. In an aspect, the top and bottom knockdown bracing are hinged within a first column, while the diagonal knockdown bracing is hinged within the second column.