Walnut Extrusion (am-3478) is the latest iteration of the nut-themed structural extrusion line. It follows the design standards of Peanut Extrusion and expands them to a 2×1 profile.

Walnut is an easy-to-use structural extrusion perfect for building strong, 90 degree joints without gussets. The profile has an end profile of 6 holes for 1/4-20 thread-forming screws on a 5/8 in. square grid pattern. The added rib supports are positioned to flank the pass-through bolts that thread into the adjoining extrusion. These ribs provide extra strength and prevent the side walls of the Walnut from being crushed by over tightening these bolts.