Grab Bar with Concealed Mounting. Concealed mounting flange 1/8″ (3mm) thick, type-304 stainless steel plate, 2″ W x 3 1/8″ H (50mmx 80mm), with screw holes for concealed anchors. Cover is 22 gauge (0.8mm), type 304 stainless steel with satin finish, 3 1/4″ (85mm) 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