Galvanized square tubing with holes. Perforated Square Tube comes in widths from 2”, 2-1/4” and 2-1/2”. It measures 20 ft. We supply Galvanized Square Tubing in 20 and 24 foot lengths. Choose from our selection of square steel tubing, including low-carbon steel rectangular tubes, weld-together framing and fittings, and more. About This Product Provide a sturdy base for your fencing project with the Protecto Fence 2 in. Perforated tube has 7/16" diameter holes on 1" centers on all four sides of the tube. P. Square tubes for Mechanical tubing and signpost applications. Galvanized steel conforming to ASTM Specification A653 DES G90. In-line, galvanized zinc coating per AASHTO M-120, followed by a conversion coating and a clear organic topcoat. xmz ffu 73ut l7z7ea poe ywq5t 2om62b kg np3e9hc sote