Specification of temporary fence panels for sale. Tubing. 1¼” (32mm) 1⅜” (35mm) 1½” (38mm) 1⅗” (40mm) 1⅝” (42mm) 1⅞” (48mm)and so on. Thickness of Tubing. 14ga/2.00mm 14.5ga/1.90mm 15ga/1.80mm 15.5ga/1.70mm 16ga /1.6mm 16.5ga/1.50mm 17ga1.42mm 18ga 1.22mm. Chain mesh aperture.