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ModelU-factor
Solar Heat Gain
ERStyle
Layers of Glazing
NRCan Reference
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DHT_ED_3MM_CARD180#2-ARG90-I89#41.420.4735Double Hung2NR7318-21722292-ES5Regular E-Star
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DHT_ED_4MM_CARD180#2-ARG90-I89#41.410.4635Double Hung2NR7318-21722294-ES5Most Efficient
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