The Woodhead 67W81 is a Watertite Receptacle with Locking Blade, Single Flip Coverplate, 4 Pole/5 Wire, NEMA L21-20 208V, 3øY Receptacle. It has a 20.0A current maximum per contact and a 3ØY 208V maximum voltage. It is a heavy-duty Female rubber connector with an operating temperature of -40 degrees Celsius to 75 degrees Celsius.. The Captive, tri-drive head, Stainless Steel, speed screw provides easy assembly and long life. The floating blade construction provides self-alignment, and a better mechanical and electrical connection minimizing wear and heat generation