Firebrick for kilns (1) soft straight k23 2300 degrees 9″ x 4 1/2″ x 2 1/2″ also used for other projects

Soft insulating bricks are used for general kiln construction because they are lightweight and easy to cut without the use of special saws or tools. Each brick measures 9.0″x4.5″x2.5″. Rated to 2300°F

• Putting together a kiln? This brick will do up to cone 10!