Mineral shot panel with porous hard foil

PTB reference data

Original description

Material properties

Thickness: 15 mm

Wall distance: 50 mm

Surface weight: 4.4 kg/m²

Surface: porous hard foil on both sides

Flow resistance: 400 Rayl

Mounting: on 24/48 mm cross-battening

ISO 354 – reverberation chamber

αw

0.48

αp nach ISO 11654

125 Hz

0.10

250 Hz

0.45

500 Hz

0.70

1000 Hz

0.50

2000 Hz

0.45

4000 Hz

0.55

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Method (354): Measured