(Al) The ratio of the amount of total solar energy, which is, reflected outward by a glazing system to the amount of total solar energy falling on the glazing system. With SS-5 and Verosol fabrics its the ratio of solar energy reflected by the shading on the aluminum side.

The percent of incident solar radiation that is reflected by the window film/glass system. The lower the number, the less solar radiation reflected.

The solar radiation in the near ultraviolet to near infrared spectrum that is reflected away from a surface expressed as a percent or within the range of 0.00 to 1.00.