Is not
The rigid way to install the installation PGP is that the groove plate is attached immediately to the enclosing structures. In this case, the elastic gasket is not used, the PGP is attached using a solution of putty based on gypsum.
The rigid way to install the installation PGP is that the groove plate is attached immediately to the enclosing structures. In this case, the elastic gasket is not used, the PGP is attached using a solution of putty based on gypsum.
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