Fire Bricks ( 6 Pack )

Use to build new fireplace fire boxes or to replace broken fire
brick. Intermediate duty bricks have a service temperature of 2700ø fahrenheit. Measures 9" x 4 1/2" x 1 1/4". Meets ASTM C-20, C-16, C-113, C-38, C-133. Packaged 6 bricks per box.