Leviton 8450 50 Amp, 250 Volt, Flush Mounting Receptacle, Straight Blade, Industrial Grade, Grounding, Black Heavy-Gauge, Double-Wipe Copper Alloy Contacts Easy-to-Wire Terminals Accept up to No. 4 AWG Conductors Terminals Marked for Easy Identification and Fast Wiring All Mounting Hardware Included Flush-Mount Devices Fit Single or Two-Gang Outlet Boxes