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Non-water soluble refractory mortar 10-lb Mortar Mix in the Concrete, Cement & Stucco Mixes department at Lowes.com
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Tenon Refractory Mortar - High Temperature Mix for Fireplaces, Fire Pits, Chimneys, Parging, Brick, Clay, and More, White in Color, High Heat Resistance, Up to 2550°F (10 Pound, 1): Amazon.com: Tools &
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