Isolated Ground Heavy-Duty Spec Grade Duplex Receptacle Back & Side Wire 20amp 125volt.FEATURES AND BENEFITS:• RoHS Compliant• IG symbol and Isolated Ground markings for easy identification and circuit delineation.• Triple-wipe brass contacts ensure lasting, positive contact with plug blades.• High-impact resistant nylon face resists impacts and scrapes.• Corrosion-resistant plated steel strap.• Patented feature, external screw-pressure-plate back wire clamp on ground terminal for faster, easier installation.• Plastic barrier isolates grounding terminal from mounting strap and metal boxes.• Side and internal screw-pressure-plate back wire capability with #14 - #10 AWG copper or copper-clad, solid or stranded wire.• Auto-ground clip assures positive ground.