Fire Brick

Firebrick or refractory brick are blocks of refractory ceramic material used in lining furnaces, kilns, fireboxes, and fireplaces. A refractory brick is built primarily to withstand extremely high temperatures, but will also have a low thermal conductivity for greater energy efficiency. Full firebrick are 9” × 4½” × 2 ½” with firebrick “splits” being half the thickness @ (1 ¼”). Spits are often used to line wood stoves and fireplace inserts.