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What does VT stand for in the context of windows, doors, or skylights?

• Visible Transmittance

• Vertical Tube

• Ventilation Technology

• Variable Transmission

What is the purpose of a light shelf in a room?

• Shade glazing from direct sunlight and reflect daylight into the space

• Enhance artificial lighting in the room

• Increase solar heat gain through windows

• Block all incoming light for privacy

What is the function of a heliostat?

• Extract light uniformly along a light pipe

• Regulate the amount of solar heat entering a window

• Automatically move to reflect sunlight in a fixed direction

• Control the angle of exterior fins for shading

What does SHGC represent in the energy performance of windows, doors, or skylights?

• Solar Heat-Gain Factor

• Solar Heat-Gain Coefficient

• Standard Heat Gain Calculation

• Sunlight Heat Gain Control

What is the purpose of a sunshade in relation to windows?

• Regulate solar heat gain through a window

• Increase visibility and daylighting through a window

• Provide privacy by blocking all light

• Shield a window from direct sunlight using fixed fins