AMACO Insulating FireBrick, 9 X 4-1/2 X 2-1/2 in ...
Lynn Manufacturing Fire Heat Insulation Brick - Soldering Torch Welding Insulating Block, Low Thermal Conductivity - for Kilns, Forges, Furnaces, Solder - 2.5'x4.5'x9', Pack of 2, 2600F-Rated, 3126Q Executive Deals Insulating Fire Brick for Ovens, Kilns, Fireplaces, Forges - 4 Piece Full Brick (9' x 4.5' x 2.5') 2300F
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