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CinemaZone™ System Type System Description Approx. Acoustic Rating Rw* CinemaZone® Gold 65dB CinemaZone® Silver 55dB CinemaZone® Bronze 45dB *The Weighted Sound Reduction Index (Rw) provides a scientific basis for comparing the acoustic properties of building materials. Components with high Rw values have greater sound isolating properties than those with low Rw values (10dB increase in Rw values has the effect of halving the perceived sound). For comparison, acoustic rating of a standard plasterboard wall is approx. Rw=36dB.