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 Casement |
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| Bay
or Bow |
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| Awning
Windows |
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| Double
Hung |
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| Skylights |
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| Egress
Basement |
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| The
Big Picture |
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| Understanding "Energy Efficient" |
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| Glossary
of Window Terms |
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                        NFRC (National Fenestration Rating Council®): a non-profit organization that certifies the energy ratings for doors, windows and skylights. Nailing Fin: a flange around a window frame used for attachment to the stud wall. National Certified Testing Laboratories: an independent testing lab that tests home products for certification groups such as the NFRC. North-light roof: a roof having a saw tooth configuration with clerestory windows on the north-facing side.
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