50 mm I-Stud (PI50) with standard track (SPT52)., 50 mm I-Stud (PI50) with Deep track (50 mm leg, SPEDT52).
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Insulation
Not required., 25 mm-thick glass mineral wool., 50 mm-thick glass mineral wool.
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Linings
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Inner layers
BG Gyproc 15 mm DuraLine., BG Gyproc 12.5 mm FireLine., BG Gyproc 15 mm FireLine., BG Gyproc 12.5 mm SoundBloc., BG Gyproc 15 mm SoundBloc., BG Gyproc 12.5 mm WallBoard., BG Gyproc 15 mm WallBoard.
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Face layer
To match inner layer., Not required/ not applicable.