"CM20 (.187Ø) straight sections have a grid pattern of 2 x 4 and are available in standard widths of 6, 8, 12, 18 and 24. Lengths can be ordered in 1, 2, 5, 8 and 10 with a depth/height of either 2 or 4. All cable tray sections include interconnecting hardware. CM20 meets UL requirements as a ground conductor."... Click here for more info on CM20 straight section 6 W x 4 D x 5 L.
