U Factor

the thermal transmission in unit time through a unit area of a particular body or assembly, including its boundary films, divided by the difference between the environmental temperatures on either side of the body or assembly. Note that the U-factor for a construction assembly, including fenestration, includes the interior and exterior film coefficients (the boundary films referenced above). For characterization of fenestration products, the U-factor is calculated for the whole product, including the effect of the frame (center of glass, edge of glass, frame). U-factor = 1 / R-value

Data Type: 
Decimal
Category: 
Unit of Measure: 
Btu/hr·ft2·°F
Sector: 
Commercial, Residential, Multifamily
Application: 
N/A
Term ID: 00d16944-afa5-47c6-933f-2a35c0359d49
CSVXML