Designed for the safety, security and convenience of the physically disabled. Easy to install on most building surfaces. Grab Rails shall be type 304 stainless steel alloy 18-8. Tubing shall be 32mm diameter x 18 gauge (1.2mm). Flange shall be 3mm thick and shall be Heliarc welded to tubing with a continuous concealed bead and shall have three (3) 7mm diameter mounting holes. Cover plates to conceal flange and fixings shall be 22 gauge (0.8mm) stainless steel. See chart for standard sizes.