what is the inside of a duvet called

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  • 4. Acoustic Performance The Noise Reduction Coefficient (NRC) of mineral fiber ceiling boards typically falls between 0.60 to 0.90, making them effective in minimizing ambient noise and enhancing sound quality within a space.


  • 3. Drywall Panels These are the sheets of gypsum board that are attached to the grid framework to form smooth walls and ceilings.