Full Technical Description: Surface Mount Type; 5-3/4 Inch W X 5-11/16 Inch D X 5-3/4 Inch H Size; Aw-91, Dw-91 Series 2-1/2 Inch Rectangular Flush Meter Used on; 3/4 Inch Hub Size; 4 Hub(S); UL 1203, CSA C22.2 Approval; Class I Div 1 and 2 Group D, Class II Div 1 Group E F G, Class II Div 2 Group F G, Class III, NEMA 3/7D/9E/9F/9G/12 Enclosure; Glass Window Cover Type; Copper Free Aluminum Body Material; Dust-Ignitionproof, Explosionproof, Raintight; (4) Lugs Mounting Hardware; Natural Finished Copper Free Aluminum Cover Material; Feed Through, Dead End Hub Location; Natural Body Finish; Applicable Standard NEC, CEC, Nema/Eemac; Cover Opening Size 4-5/8 Inch; EMH Model