The AF3-SB26 adjustable slide base provides for 26 inches (660mm) of travel in the cross web direction. 

The AF3 should be mounted on a cross member (beam) already existing on the equipment or on one installed for supporting the flagger. Four M8 rail nuts are supplied which are located on the underside of the slide base. 

Two are located on each of the outer slots on the lower cross beam on 5.12″ centers as shown. These should be used for moun­ting the flagger to the support beam. Since the rail nuts can slide in the channels of the base they can be positioned as needed.