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NA6.3 Default Solar Heat Gain Coefficient, SHGC

The SHGC of the fenestration product shall be calculated using the following equation:

Equation NA6-2

SHGCT = 0.08 + (0.86 x SHGCc)

Where:

SHGCT = SHGC Is the Total Performance of the fenestration including glass and frame

SHGCC = Center of glass SHGC calculated in accordance with NFRC 200 Section 4.5.1.1 http://www.nfrc.org/software.aspx

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