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The Vocabulary of Window Film DEFINITION OF TERMS TOTAL SOLAR TRANSMITTANCE: The ratio of the amount of total solar energy in the full solar wavelength range (300 to 2,100 nanometers) that is allowed to pass through a glazing system to the amount of total solar energy falling on that glazing system. Value is usually expressed as a percent. TOTAL SOLAR REFLECTANCE: The ratio of total solar energy that is reflected outward by the glazing system to the amount of total solar energy falling on the glazing system. On filmed windows this reflectance is a function of the side of the film facing the window surface. Value is usually expressed as a percent. TOTAL SOLAR ABSORPTION: The ratio of the amount of total solar energy absorbed by a glazing system to the amount of total solar energy falling on the glazing system. Solar absorption is that portion of total solar energy neither transmitted nor reflected. ULTRAVIOLET (UV) TRANSMITTANCE: The ratio of the amount of total UV solar energy (300 to 380 nanometers) that is allowed to pass through a glazing system to the amount of total UV solar energy falling on the glazing system. Ultraviolet is one portion of the total solar energy spectrum that greatly contributes to fading and deterioration of fabric and furnishings. For over 10 years, our Tablet Arms have been standing up to all your demands. Engineered to hold up to 300 lbs with a Lifetime Warranty. Now that's integrity. Thatʼs Integra. U-FACTOR: The overall heat transfer coefficient of the glazing system, U-Factor is a measure of the heat transfer that occurs through the glazing system, and its outer and inner surfaces. This value is a function of temperature. The lower the U-Factor, the better the insulation qualities of the glazing system. SHADING COEFFICIENT (SC): The ratio of the solar heat gain through a given glazing system to the solar heat gain under the same conditions for clear, unshaded double-strength window glass (DSA). The shading coefficient defines the sun control capability or efficiency of the glazing system. Source: The International Window Film Association (www.iwfa.org). See us at NeoCon 10th Floor #140 and at ACUHO-I Booth #525 800.235.0234 INTEGRASEATING.COM MAY 2013 / COLLEGE PLANNING & MANAGEMENT 81