Exposed Surface Mounting Grab Bar. Flange 1/8″ (3mm) thick, type 304 stainless steel plate, 3″ (75mm) diameter. Bars available in 1 1/4″ or 1 1/2″ dia. stainless steel, smooth or peened finish. Horizontal or Angled. M3=16″ M5=24″ M7=36″ M4=18″ M6=32″ M8=48″ Product Downloads: Typical Grab Bar Applications Canadian Placement Sheet