Refractory Ceramic Fiber Insulation (6#,2300F)(1"x24"x25') for Brick Ovens, Furnaces and Stoves Aluminosilicate Ceramic Fiber Blanket 6lb/ft3 (96kg/m3) Non-reactive with moisture (unlike mineral wool and vermiculite) 2300F (1260C) Maximum Temperature, 2100F Continuous Use Can be cut by knife or with heavy scissors Excellent high temperature insulator