The Viking 21 slim line double glazed unit is available in both traditional and modern profiles. With a Uw of 1.2 W/m²K, it leads its field whilst still offering fantastic value for money. 

Viking 21 Window (double glazed)

  • Thermal transmittence

    Uw = 1.24 W/m²K (1.23 x 1.48 m opening standard window)


    Sound insulation

    Rw = 33 dB (-1;-4) - with standard glazing

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Ecospheric Ltd

Lymm Hall


WA13 0AJ