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USG Interiors produces a family of X-technology wet felted acoustical ceiling panels at its Cloquet, MN, facility having various light reflectance, noise reduction, and attenuation specifications with various levels of post-consumer/industrial recycled content. The X-technology wet felted production line at the Cloquet facility employs a wet-felted technology in the production of acoustical ceiling panels. X-technology wet felted2 acoustical ceiling panels contain mostly mineral wool, starch and latex. In smaller amounts, other raw materials used in the panel forming process include flocculants, biocides and de-foamer. The finishing and packaging unit processes are dominated by the use of water-based paint, which contains ingredients such as calcium carbonate, clay, latex, titanium dioxide (TiO2) and other chemicals. Shrink-wrap and corrugated strip are used as packing materials