17″ x 1.25″ SQ. 11 GAUGE STEEL TUBE STAND-OFFS, TOOL, SHELF, SHELVING BRACKETS
This is 11 gauge square steel tube and plate. It is 17″ long and flange plate is 3″ long on each edge. 5/16″(.3125) mounting holes are drilled 2.125″ on center and have counter sinks for screws ot bevel head bolts.