... Round Hole Perforated Metal Round 3/16'' diagonal 12 holes per sq.in Ga. Steel,33% open. Quick Delivery & customers'label Round hole perforated ... has an aesthetic appearance. 60 degree staggered centers round hole is the most popular type because of its inherent strength ... your order,please tell us the below information, Material,hole shape,pitch,open ,hole sizes. Any questions,let us know freely , it ...