Lowell IWBK-1414 Front Cover Panel for IWB/IWBK In Wall BoxCover panel for in wall box (IWB and IWBK Series) is steel construction with a white powder epoxy finish to match the box's trim plate. The panels sized for the IWB Series feature upper openings to allow cable entry. The panel for the IWBK model features both upper and lower openings. Specifications Steel with white finish Mounts with pins Vents Some models have an open segment at bottom