The D-STL series boxes are used as junction or pull boxes. They are suitable for indoor application, and surface mounting. They are manufactured from 16 Ga or 14 Ga steel. There are concentric knock-outs on 6x6x3 to 12x12x6. They come complete with screw cover, four internal mounting holes and a grounding provision. Boxes marked with * are finished with heat fused polyester powder, electrostatically applied on a phosphatized base, ASA-61 Grey. Enclosures not marked are pregalvanized steel. Options include: flush covers, back panel plates and custom paint colors.