The use of additional insulation between the two panels of a CS-600/70 wall improves the sound reduction by an amazing 4dB compared to the CS system on page 15.
Note that building thickness is not more than 70 mm.
*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.