Double Hung Ratings

	A	B	C	D	E	F	G	I
1	Model	U-factor	Solar Heat Gain	ER	Style	Layers of Glazing	NRCan Reference
2	DHT_ED_3MM_CARD180#2-ARG90-I89#4	1.42	0.47	35	Double Hung	2	NR7318-21722292-ES5	Regular E-Star
3	DHT_ED_4MM_CARD180#2-ARG90-I89#4	1.41	0.46	35	Double Hung	2	NR7318-21722294-ES5	Most Efficient
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