Nordpeis wood burning stoves Uno 1Heat Output: 4kWEfficiency: 82%Flue outlet: Top or rearEnergy Efficiency Class: A+ Quadro 3T Nominal Heat Output: 6.2kW Heat Output Range: 4kW – 8kW Efficiency: 80% Energy Efficiency Class: A+ MENominal Heat Output: 5.8kWHeat Output Range: 3kW – 6kWEfficiency: 79%Energy Efficiency Class: AFlue outlet: 150mm (top or rear)Weight: 74kg Uno 2Heat Output: 4kWEfficiency: 82%Flue outlet: Top or rearSide Windows: Y Uno 4Heat Output: 4kWEfficiency: 82%Flue Outlet: Top or rearSide Windows: Y Duo 1Heat Output: 5kWEfficiency: 80%Flue Outlet: Top or rearSide Windows: Y Duo 2Heat Output: 5 kWEfficiency: 80%Flue Outlet: Top or rearIntegral Log Store: YSide Windows: Y Duo 4Rated power: 5kWEfficiency: 80%Flue outlet: Top or rearIntegral ‘Hidden’ Log Store: Side Windows: Y GlasgowHeat Output: 5kWEfficiency: 84%Flue outlet: Top or rearEnergy Efficiency Class: A+ BergenHeat Output: 5kWEfficiency: 84%Flue outlet: Top or rear