Gyproc DUROnomic k450 ja Gyproc GN 13 Normaali

Soundproofing class normally achieved

Specifies the soundproofing class that normally can be expected if the construction is carried out according to Gyproc's Manual and Gyproc's other instructions.

With connection for higher sound class this sound requirement is achieved

Corresponds dark blue classification, provided that the connections are made using a sound class better than the requirement.