DOMETIC SMEV HSG2445 - 2 Burner Gas Hob & Sink Combination. The Dometic HSG 2445 2 burner hob & sink combination Unit is a space efficient hob and sink combination unit for caravans, motorhomes, campervans and boats. Dimensions: (H)138.5 x (W)600 x (D)445 mm. This unit has a 27mm tap hole. Gas Supply Pressure: 30 mbar.