HARVEST METAL FIBRES CO,, LTD
Q
When should I use Heat Cast 40 and how should it be applied?
A
Heat Cast 40 is designed for casting shapes or is used anywhere instead of firebrick. It can also be used as a hearth in a heat chamber (e.g., bake ovens, fire pits, fire boxes). You will need 20 lbs. per square foot when applied 2” thick. There is 40 lb.in each bag.

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