Gas Stove Heat output: 3.8Kw Width: 18 ¼inch (464mm) Height: 21 ½inch (549mm) Depth: 14 ¼inch (362mm) Flue Size: 5inch (127mm) Height to Ctr Rear Flue: 17 ½inch (442mm) Depth From Back Of Stove To Ctr Of Top Flue: 4inch (105m) Flue Options: Top or Rear (Interchangeable) Approx Weight: 56kg Efficiency: 75%Manual For The ProductTechnical Manual For The Product