Unit is a 1994 package. Unit is sound attenuated rated at 85dba at3'. Fuel tank is double wall. Enclosure has lights. Gen set has EMCP panel. Gen set was maintained by Caterpillar dealer. 8' wide 21' Long 11'-4" tall with out muffler 14'-6" with muffler 37,796 lb includes full fuel { 1200 gal }