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Armstrong PERLA OP 0.95

Nrc	0.9
Colour	Blanc
System	Apparent et démontable - Système C
Alpha w	0.95
Coating	voile de verre
Nominal	15 mm
Material	mineral
Edge type	Board
Durability	EN ISO 14021: 58.1–63.6% (2023)
Fire class	Classe A
Air quality	A+; IACG
Thickness mm	15
Weight kg m2	2.4–2.6
Dimensions mm	600 x 600, 675 x 675, 1200 x 600
Alpha p values	125 Hz: 0.45; 250 Hz: 0.80; 500 Hz: 0.95; 1000 Hz: 0.90; 2000 Hz: 1.00; 4000 Hz: 1.00
Alpha w values	0.90; 0.95; 1.00
Emission class	E1
Cleanroom class	ISO 5
Sound reduction	Rw = 12 dB
Absorption class	A
Absorption standard	EN ISO 354; EN ISO 11654
Lateral attenuation	Dn,f,w = 25 dB; CAC = 25 dB
Moisture resistance	95% RH
Thermal conductivity	λ = 0.060 W/mK
Reaction to fire class	A2-s1, d0
Light reflection percent	85
Formaldehyde emission level	lowest possible test result

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