1Lb. 13 In. L X 13 In. W X 4 In. H Ceramic Bulk Fiber Box (6-8# Densities, 2300F
L X 13 In. H Ceramic Bulk Fiber Box (6-8# Densities, 2300F) – R 2.27. Ceramic Bulk Fiber (6-8# Densities, 2300F) consists of high quality spun or spun and chopped high temperature fibers made of alumina-silica ceramic, which is naturally chemically inert.