This is a panel module that can accommodate a single 2 bolt twistlock. Its oval mounting hole will fit most brands (Hubbel Bryant, etc.). The panel fits into a Middle Atlantic frame kit so you can create custom rack enclosures.
Middle Atlantic TW Specs
Finish Brushed and black anodized finish
Dimensions 3.39 x 3.49″
Package Weight 0.1 lb
Box Dimensions (LxWxH) 3.5 x 3.5 x 0.32″