Abstract: A seismic base for an equipment rack includes a base plate, a first side wall attached to the base plate, a second side wall attached to the base plate, the second side wall being positioned behind the first side wall in a longitudinal direction, an anti-tip support bar extending between the first and second side walls in the longitudinal direction, and a support beam extending in a lateral direction, between the anti-tip support bar and a first lateral wall of the first and second side walls, respectively. The seismic base resists translatory and/or pivoting movements (e.g., of the equipment rack to which the seismic base is attached) in or about, respectively, the longitudinal direction and the lateral direction.

Abstract: Novel adjustable panels, systems, and methods are provided. In one aspect, an adjustable panel system can include a first panel, a second panel, and a third panel. The first panel and the second panel can be adjustable to a plurality of adjusted positions with respect to each other in a plurality of fixed increments. The third panel can be adjustably movable with respect to the second panel in increments smaller than the fixed increments. In one aspect, the panels, systems, and methods can be used to provide a portion of a security cage used to house sensitive electrical equipment.