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KMAC, Inc., a Licensed Applicator of Hacker Industries, Inc. based in Hutchinson, Minnesota, was contracted to install FIRM-FILL® High Strength Underlayment and FIRM-FILL® SCM-250 sound control mat in the NordHaus apartments. FIRM-FILL® SCM is installed on the subfloor to improve impact noise, while FIRM-FILL® gypsum underlayments are installed over the SCM to dampen airborne sound and provide a flat surface for finished floor coverings. FIRM-FILL® products are listed in 116 fire rated designs and carry a Class-A fire rating under ASTM E84, a test used by regulatory agencies.

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