This is the factory original Firebrick Set for the firebox lining on this cast iron Whitfield Traditions pellet stove T300P also known at the P11 model or P-11Please be sure not to mix up this model with the similar TP300 Traditions pellet stove as these parts are different.  We also supply an aftermarket option for this part which is made from superior materials and costs less. Find that by clicking here.Lennox part # 20950150