Extension of the portal of the furnace GROZA 18/24M 120MM

For the removal of the portal for walls of greater thickness, it is possible to install additional portal extensions 100 and 150 mm long.

Theoretically, the number of additional extensions can be set to an unlimited number, you just need to replace the M8 studs for the portal tie to the appropriate length (for example, if you add 2 extensions of 100mm each, the stud increases by 200mm).

It is necessary to take into account the convenience of use - loading firewood will need to be done through an enlarged tunnel, the ash box will also be deepened inside. When installing additional extensions, their joints must also be coated with sealant during assembly.