Wall Frames - 4-sided extrusion frame FRL400 500 / 20" 550 / 22" 600 / 24" 400 / 15.75" WFS4E131 WFS4E132 WFS4E133 650 / 26" WFS4E134 700 / 28" WFS4E135 750 / 30" WFS4E136 800 / 32" WFS4E137 850 / 34" WFS4E138 64