Lower refractory brick (2 ps) De Dietrich 300009188

The lower refractory brick is designed to line the bottom of the firebox, providing essential insulation and heat resistance. This component helps maintain high combustion temperatures while protecting the boiler shell from thermal stress. Whether you are upgrading an old system or replacing cracked bricks, this part ensures your heating equipment operates at peak efficiency. Suitable for a range of boiler types, it is a fundamental spare part for any boiler maintenance or repair project.