| http://www.w3.org/ns/prov#value | - Joined: Wed Apr 04, 2007 11:21 pmPosts: 3803Location: DC Metropolitan Area-Maryland/Virginia/DC I think Dave already posted this, however, the differences are predominantly aesthetic.I realize there is the slight difference in U-Factor and air infiltration, however, the unofficial reason that I was given for that delta was an effort to create some differentiation in the product lines.Comes down
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