lindab | residential ventilation Grille AL30C Quick selection, Supply air Grid size [mm] 3 /h 100 A k [m²] m l/s 28 L WA [dB(A)] 24 200x100 v k [m/s] 2,7 0,010 ѐW t WĂ 8 I 0,2 [m] 4,2 L WA [dB(A)] <20 300x100 v k [m/s] 1,7 0,017 ѐW t WĂ 3 I 0,2 [m] 3,3 ϭϬч> WA < 30 ŝƌĨůŽǁƌĂƚĞ 150 200 250 42 56 69 36 46 4 5,4 18 31 6,3 8,4 23 32 38 2,5 3,4 4,1 7 12 19 5 6,6 8,2 ϯϬч> WA < 40 300 350 83 97 44 49 5 5,8 27 37 9,8 11,5 ϰϬч> WA < 50 Data valid for: - Supply air - Isotherm conditions - Throw without ceiling effect (distance >800 mm. to ceiling) Terminology: - A k = effective free area - V k = effective face velocity - Δ P t = total pressure loss - L WA = sound power level - l 0,2 = throw to terminal velocity at 0,2 m/s Quick selection, Extract air Grid size [mm] 3 /h 100 A k [m²] m l/s 28 L WA [dB(A)] 30 200x100 0,010 v k [m/s] 2,7 ѐW t WĂ 13 L WA [dB(A)] <20 300x100 0,017 v k [m/s] 1,7 ѐW t WĂ 5 ϭϬч> WA < 30 Data valid for: - Extract air ŝƌĨůŽǁƌĂƚĞ 150 200 250 42 56 69 42 4 30 30 39 45 2,5 3,4 4,1 12 21 31 ϯϬч> WA < 40 Terminology: - A k = effective free area - V k = effective face velocity - Δ P t = total pressure loss - L WA = sound power level ϰϬч> WA < 50 2 Lindab reserves the right to make changes without prior notice 2020-05-26
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