Wall Anchor shall be suitable for surface mounting to finished solid concrete wall of all grab bars with exposed-type mounting flanges (e.g. ASI series 3300, 3400 and 3500 grab bars). Wall anchor shall be No 12-24 x 1-1/2″ long machine screws with matching lead expansion-shields. Anchor kit shall contain (3) machine screws with matching lead expansion shields. Specify one (1) kit per flange.