This 147mm coursing block is designed for building gas flue systems, featuring a bonded nib that aids in the alignment and integration of flue liners. Its format supports straightforward placement within traditional brick or blockwork assemblies.
On site, trades frequently use this block when constructing or refurbishing chimney stacks for gas appliance ventilation. It assists in supporting and levelling flue components, commonly in projects involving pitched roofing and the installation of clay chimney pots.
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