#20-G has the same properties as #20 with a fine grog added for slightly less shrinkage and improved workability. 

EM107, #20‑G

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  • Characteristics Cone: 06 Wet Color: Red Fire Color Oxidation: Terra Cotta Reduction: N/A Texture: Medium Coarse Consistency: Standard Avg. Shrinkage 2±% 8.0% Avg. Water Absorption 1±% 11.5% COE x 10-6: 4.80