Daylight Transmittance: (VT or Tvis, visible transmittance)
Daylight Transmittance: (VT or Tvis, visible transmittance)

Daylight Transmittance: (VT or Tvis, visible transmittance)

It is a comparison of the total transmittance of solar energy compared to 3 mm colourless glass. 3 mm clear glass transmits about 87% of the light. Lower shading coefficient means better solar control.

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