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Delta Linear Alterné 12/20/66

Note	Selon RE CSTB n° AC 14-26051731-2
Alpha w	0.8
Nominal	1188 x 1980 mm
Material	gypsum
Width mm	1188
Edge type	Linear
Length mm	1980
Backing type	laine minérale
Page produit	418
Reaction au feu	A2-s1,d0
Backing material	laine minérale
Perforation type	Alterné 12/20/66
Backing thickness mm	60
Suspension height mm	200
Taux perforation pct	13,40 à 19,60
Absorption coefficient 125hz	0.6
Absorption coefficient 250hz	0.85
Absorption coefficient 500hz	0.85
Absorption acoustique alpha w	0,70(L) à 0,80(L)
Absorption coefficient 1000hz	0.85
Absorption coefficient 2000hz	0.7
Absorption coefficient 4000hz	0.7

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