Pumice firebrick for wood and coal stoves, fireplaces, smokers, and firepits. Our firebricks are extremely durable and designed to withstand high temperatures, helping prolong the life of your wood or coal stove. Firebricks are an important part of every stove. The bricks job is to insulate the firebox from direct flame damage while providing radiant heat. Please check your manual for compatibility, many sizes are available, see more sizes here.