Toggle Switch, Extra Heavy-Duty, General-Purpose, Locking, Standard, 120/277 VAC, 20 A, SPDT, 1 Pole, Momentary Center On/Off, Double Ended Key, Wall Mount, Screw, Back and Side Wired Terminal, Thermoplastic Top/Thermoset Base/Silver Alloy Contact, Black, 4.06 in L x 1.31 in W x 1.89 in H, Industrial Grade, 14-10 AWG Wire, 1500 VAC Dielectric, -40 to 75 deg C Operating