42" Cast Iron Damper
Cast iron fireplace damper used to regulate airflow and draft in masonry fireplace systems. Designed for large firebox openings requiring robust airflow control.
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Concrete Calculation Disclaimer:
Calculations provided by this tool are for estimation purposes only. Actual yardage may vary due to site conditions, such as uneven subgrade or bulging forms. To ensure you have enough material, it's recommended to add an additional 1/4 to 1 cubic yard to the calculator results. Depending on the subgrade's levelness, larger pours of 20 yards or more may require up to 10% additional.