1. Plain Fire Bricks, Size 9 X 4.5 X 3 , Grade-A (High Alumina, Min. 70 Percent Al₂O₃), Service Temperature Min. 1500 Degree Celsius, Conforming To Is:2042-2006 Or Latest. 2. Fire Clay Yellow Cream, Suitable For Low To Medium Duty Refractory Applications With Service Temperature Up To About 1450 Degree Celsius.