Made from high purity refractory clays and other ceramic raw materials, these Insulating firebricks contain carefully graded organic filler, which is burned out during production to give a uniform controlled pore structure. The lightweight and high insulating value of our IFB's make possible thinner furnace walls, improves efficiency and lower operating costs. Next to the delivery of standard sizes, we have in-house machining capabilities to provide arches, wedges, etc.