Window Choice for Chicago
Question
Which one of the following NFRC-rated windows would you recommend for windows in Chicago?
(a). U-0.35 SHGC-0.20
(b). U-0.27 SHGC-0.25
(c). U-0.35 SHGC-0.30
(d). U-0.40 SHGC-0.35
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