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Product description: Hard 13: Gypsum plasterboard composed of a reinforced plaster core with high density to achieve enhanced strength and surface hardness. The front and back paper liners are overlapped and glued together on the backside of the board. The board is classified for use in fire-rated construction and will provide excellent sound insulation. For use in schools, daycare, areas with impact resistance requirements. Floorboard 13: Gypsum plasterboard composed of a reinforced plaster core with high density to achieve enhanced strength and surface hardness. The front and back paper liners are overlapped and glued together on the backside of the board. The board is particularly suitable for use as subfloor under ceramic tiles in dry conditions and as noise impact insulation for floor construction. Technical data: The product is in compliance with EN 520 Hard 13: Weight: 12,0 kg/m2 ± 2 % Thickness: 12,5 mm ± 0,5 mm Floorboard 13: Weight: 14,0 kg/m2 ± 2 % Thickness: 12,5 mm ± 0,5 mm For more information from the product data sheet, see www.norgips.no / www.norgips.se