Perfect size for the floor of a typical forge.
3000 °F (rated beyond steel welding heat), low iron, insulating castable refractory.
This is a gem.
Kast-O-Lite 30 LI Plus does not have the density and burner durability of MIZZOU (also a 3000 °F castable), but it is lighter and offers superior insulation.
Tip: Kast-O-Lite can be coated with ITC-100, once cured, to optimize forge efficiency, and with ITC-296A for improved flux resistance.