9 In. X 4-1/2 In. X 1-1/4 In. Medium-Duty Firebricks (3 per Box)
Proper selection of the appropriate grade is critical. Uses include backup linings, lower-temperature ceramic kilns and chimneys, and contains 34-38% alumina. X 4-1/2 In. X 1-1/4 In. Product Weight (lb) 12 lb.