Leviton 8300-HW 20-Amp, 125-Volt, Heavy Duty Hospital Grade, Duplex Receptacle, Straight Blade, Self Grounding, White Interlocking Thermoplastic Nylon Cover and Body Nickel- Plated Brass Strap with Integral Ground Contacts 15-20 Amp Duplex & Single Configurations Available Permanent "Green Dot" Marked on Face Exclusive V-shaped, serrated back-wiring clamps for superior contact