Mounting accessories included end stops, mounting brackets, and rails. Screw-actuated end stops clamp firmly to the rail, prevent lateral movement, and hold the terminal block assembly in place. End stops must be used at either end of a rail assembly. ATB2EC1 stops are actuated vertically, and can be used with all rails. ATB2EC2 stops feature angled actuation, and are for use with specific blocks mounted on ATBDR351 and ATBDR35151 rails. The ATBDRMB1 angled mounting bracket allows rail to be mounted offset from the panel and at 45°. It simplifies access, particularly when the rail is at the bottom of a panel. The ATBDRMB2/3/4 family of offset brackets provides a choice of panel clearance.