Insulating FireBrick
hard
refractory 3000 degree.
9″ x 2.5″ x 4.5″ x 4″ The small end of the wedge is 4″, the wide end is 4.5″
Insulating Fire Brick 3000 degree K-23 9 X 4.5″ X 4″ X 2.5″
KEY
IMPORTANT
,
KEY BRICKS
like for an ARCH or circle.
You can also lay them in a herringbone pattern for straight walls.
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