In the window covering industry Solar Shade descriptions refer to an “openness factor”. This translates into the amount of light that is allowed through, expressed as a percentage. A lower openness factor increases UV blockage, but the outside view will not be as clear. The higher openness factor creates a better view, but decreases UV blockage. Solar Shades with 5% openness factor diffuse light for a soft screened view; harmful UV rays by are blocked by 95% or higher. Solar Shades are typically used where an outward visibility, glare control and temperature reduction is desired.