Leviton 2710 30 Amp, 125/250 Volt, Flush Mounting Locking Receptacle, Industrial Grade, Grounding, V-0-MAX, Black Color-Coding Indicates Voltage Ratings UL/Fed.Spec./CSA/NOM UL V-0 Flammability Rating NEMA and Non-NEMA Configurations UL V-0 flammability rating