Fenestration is an architectural term that refers to thearrangement, proportion, and design of window, skylight, and door systems in abuilding. Fenestration can serve as a physical and/or visual connection to theoutdoors, as well as a means to admit solar radiation for daylighting and heatgain to a space. Fenestration can be fixed or operable, and operable units canallow natural ventilation to a space and egress in low-rise buildings.

FENESTRATION COMPONENTS
Glazing Units
Framing
Shading
DETERMINING FENESTRATIONENERGY FLOW
U-FACTOR (THERMALTRANSMITTANCE)
Determining FenestrationU-Factors
Surface and Cavity HeatTransfer Coefficients
Representative U-Factorsfor Doors
SOLAR HEAT GAIN AND VISIBLETRANSMITTANCE
Solar-Optical Properties ofGlazing
Solar Heat Gain Coefficient
Calculation of Solar HeatGain
SHADING AND FENESTRATIONATTACHMENTS
Shading
Fenestration Attachments
VISUAL AND THERMAL CONTROLS
AIR LEAKAGE
DAYLIGHTING
Daylight Prediction
Light Transmittance andDaylight Use
SELECTING FENESTRATION
Annual Energy Performance
Condensation Resistance
Occupant Comfort andAcceptance
Durability
Supply and Exhaust AirflowWindows
Codes and Standards
Symbols

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