3000 Degree Fire Brick, A super duty fireclay brick

Lynn Manufacturing Insulating Fire Brick, Heat Insulation Block, Low Thermal Conductivity, 2.5 x 4.5 x 9, Pack of 4, 3000F-Rated, for Kilns, Forges, Furnaces, Soldering, 3130R : Arts, Crafts & Sewing

Lynn Manufacturing Insulating Fire Brick, Heat Insulation Block, Low Thermal Conductivity, 2.5 x 4.5 x 9, Pack of 4, 3000F-Rated, for Kilns, Forges, Furnaces, Soldering, 3130R : Arts, Crafts & Sewing

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Lynn Manufacturing Insulating Fire Brick, Heat Insulation Block, Low Thermal Conductivity, 2.5 x 4.5 x 9, Pack of 4, 3000F-Rated, for Kilns, Forges, Furnaces, Soldering, 3130R : Arts, Crafts & Sewing

What's the different uses of high alumina bricks? - Quora