... 45.0% 3.IR Rejected(780nm<) 60.0% Windou film /glass film /reflective window film VLT: The visible light, with wavelengths ... Watts from on side of the glass to the other side, per square meter of glass, per 1°K(=1°C) difference ... energy transmittance through windows with filmed glass and solar energy transmittance through clear, unshaded double strength glass, under the same condition.Total Solar ...