FOR MASONRY FILLING 

15 cm thick ceramic brick, Category II, with vertical perforations and tongue-and-groove system, for use in protected masonry, certified according to EN 771-1:2011+A1:2015.

Calculated Measurement of Sound Reduction Index Rw  ORTHOBLOCK ΜΚ150*

*The results of the attached calculations may vary depending on the tolerance of the prediction software and the modeling theories.