Northwood NH Masonry Heater
View of the core before the facing goes on. This heater's core was built with firebricks, firebrick slabs 12"x24" and castable refractory slabs.
Double bell core
View of the core before the facing goes on. This heater's core was built with firebricks, firebrick slabs 12"x24" and castable refractory slabs.