MilbankĀ® Meter Socket, 1-Position, 600 VAC, 20 A, 3 Phase, 60 Hz Frequency, Overhead/Underground Feed, 13 Jaws, 10 AWG Wire, Plain Top Hub, Ringless Cover, Single Mechanical Terminal, Surface Mounting, NEMA 3R Enclosure, 20 in H x 12 in W x 4-1/8 in D Dimensions