Varjestustegur

the measure of the ability of a glazing to transmit solar heat, relative to that ability for 3 mm (1/8-inch) clear, double-strength, single glass; shading coefficient (SC) is being phased out in favor of the solar heat gain coefficient (SHGC), and is approximately equal to the SHGC multiplied by 1.15; the shading coefficient is expressed as a number without units between 0 and 1