Chimney Block

Amcon Chimney Blocks are made of special lightweight concrete designed to fit around modular clay chimney flues in high-heat fireplace applications. Available in Square (for 8”x8” flue) and Rectangle (for 8”x12” flue) with or without cutout.

Square7.62 in.16.75 in.16.75 in.68 lb.
Rectangle7.62 in.16.75 in.21.25 in.83 lb.

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