This kit provides support for a 30 gallon steel drum and a 6" exhaust opening.
We found that 4" stove pipe is more expensive than 6" stove pipe and the 4" burn tunnel will work just as well with a 6" stove pipe. It is the only size where an increased stove pipe size is recommended.
Steel ties between your cement bricks and the firebrick are not recommended since the expansion rate of steel is greater than the fire clay and or mortar, this will cause the mortars to crack and break. We have include 2 strips of a high temperature mineral mesh that is stronger than steel and will keep your barrel supports and cement blocks bound together.
The grooves towards the edges are for the divider plate and gaskets.