Medium Duty and High Duty Fire clay bricks good for any firebox construction up to 2,400 degrees Fahrenheit (medium) and 2,550 (high). These true refractory fire bricks are pressed on a hydraulic pressed and fired to 2,100 degrees to achieve excellent properties: strength and load bearing ability at high temperatures.
Carton Quantity varies by brick size:
9"x4.5"x1.25": 6 pieces/carton - 3.8 lbs each piece (MD) 3.9 lbs each (HD)
9"x4.5"x2.5": 4 pieces/carton - 7.6 lbs each piece (MD) 7.8 lbs each (HD)
9"x4.5"x3": 3 pieces/carton - 9.1 lbs each piece (MD) 9.3 lbs each (HD)