Every wood burning stove with firebrick liners will need to have its bricks replaced on a regular basis to keep the stove performing at optimum efficiency. This 6 pack of 4-1/2 in. x 9 in. x 1-1/4 in. pumice bricks is the perfect package to keep your stove operating perfectly. They can be used in any brand of wood or coal stove that uses this standard sized brick.