Sound Absorption: perforated_metal_panel
Sound absorption coefficients and NRC ratings for building materials — fiberglass, carpet, concrete, drapery, ceiling tile, etc. per ASTM C423 and ASHRAE Ch.49
| material | product variant | alpha 1000 (dimensionless) | alpha 125 (dimensionless) | alpha 2000 (dimensionless) | alpha 250 (dimensionless) | alpha 4000 (dimensionless) | alpha 500 (dimensionless) | category | description | mounting | nrc (dimensionless) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| perforated_metal_panel | 13pct_open_50mm_fiberglass | 0.97 | 0.25 | 0.88 | 0.64 | 0.92 | 0.99 | wall_treatment | Perforated metal panel 13% open area over 50 mm fiberglass batt | Type A | 0.87 |
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acoustic_panel_fabric_wrapped2 rowsbrick_painted1 rowbrick_unglazed1 rowcarpet_on_concrete1 rowcarpet_on_foam_pad1 rowceiling_tile_fiberglass_high_nrc1 rowceiling_tile_mineral_fiber_high_nrc1 rowceiling_tile_mineral_fiber_standard1 rowconcrete_block_coarse1 rowconcrete_block_painted1 rowconcrete_poured_painted1 rowconcrete_poured_unpainted1 row