Non-metallic thermal insulating and fire resistant boards for use in the furnace and metal casting industries and articles made therefrom, all included in this class, but not including boards for use in sliding or folding walls

Calcium Silicate Boards for Shaping and/or Assembly into Components for Handling, Controlling and Insulating the Flow of Molten Non-Ferrous Metals During the Casting Process

NON-METALLIC BUILDING MATERIALS AND ARTICLES MADE THEREFROM; NON-METALLIC BUILDING BOARDS AND ARTICLES MADE THEREFROM; CEILINGS, PARTS AND FITTINGS FOR THESE GOODS