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Letters from Environmental Building News
March 1, 2003
R-20 Kalwall Panel is Misleading
In Volume 11, No. 12, EBN included Kalwall® R-20 (RSI-3.1) with Nanogel in its list of ten best new green building products. Certainly the first commercial use of aerogel is a remarkable milestone. It is very worthy of an EBN award. However, what is...
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