UniTherm Ceramic Bulk Fiber (6-8# Densities 2300°F) 14 in. L x 14 in. W x 6 in. H, 3 in. R-6.81) Chimney/Furnace Insulation

Ceramic Bulk Fiber (6-8# Densities, 2300°F) R-value (11.35) consists of high quality spun or spun and chopped high temperature fibers made of alumina-silica ceramic, which is naturally chemically inert. Ceramic Bulk Fiber is an optimal material for the production of fiber textiles and custom insulation applications for both commercial and industrial uses, which require either shape forming or filling of intricate spaces. Other applications include fireplace panels, expansion joints, riser sleeves for met...