1/2" Kaowool Ceramic Fiber Insulation Blanket -- 8# Density. Kaowool is refractory spun with Alumina and Silica in addition to Kaolin. 1/2" Kaowool 2300 °F. Kaowool 2300 °F. Kaowool is refractory spun with Alumina and Silica in addition to Kaolin.
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