[BLDG-SIM] need insulating Al windows

Dan Johnson danjoh99 at yahoo.com
Tue Feb 27 13:52:28 PST 2007

Has anyone come across a storefront system or other aluminum windows
that have a whole-window U value below 0.4 BTU/hr deg F?  The only
alum-framed windows I've been able to find for residential use are
U=0.75 or worse. Thanks in advance.

Dan Johnson
danjoh99 at gmail.com

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