Designed for use with the 438290 Elite Steel System in facilities where the sub-floor structure is not adequate to accommodate the installation of any PV Floor Plate. Each base accepts a 3" OD standard, which is locked in place with a 1/2" bolt. Two rubber wheels are attached to each base to facilitate transport of standards. End bases have been re-designed to require only one floor anchor (center base requires two anchors). Floor anchors sold separately.