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lindab | we simplify construction Vissible diffuser Technical data Capacity Volume flow q v [l/s] and [m 3 /h], total pressure Δ p t [Pa], throw l 0.2 [m] and sound power level L WA [dB(A)] can be seen in the diagrams. Frequency-related sound effect level The sound effect level in the frequency band is defined as L WA + K ok K ok values are given in charts beneath the diagrams on the following pages. Quick selection Supply air duct Ød 1 125 160 200 Δ p t ≥ 50 Pa 30 dB(A) l/s m 3 /h 55 198 76 274 129 463 Δ p t ≥ 50 Pa 35 dB(A) l/s m 3 /h 71 256 99 356 154 553 LCF Throw l 0.2 The throw is specified at a terminal velocity of 0.2 m/s. l 0.2 [m] LCF 10 7 6 5 4 3 2 125 160 200 1 15 20 30 60 80 100 40 50 60 150 200 80 100 300 l 0.2 [m] 150 200 500 700 q [l/s] 300 v 1000 q v [m 3 /h] Sound attenuation Sound attenuation of the diffusers Δ L from duct to room, including end reflection, see table below. Size 125 160 200 Centre frequency Hz 63 125 250 500 1K 2K 4K 8K 16 9 12 8 10 11 16 21 13 9 11 6 9 8 15 20 13 13 14 15 17 17 22 25 Balancing Balancing data is contained in a separate brochure. 2 Lindab reserves the right to make changes without prior notice 2020-12-16

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Vissible diffuser Technical data Δ p t [Pa] 250 200 150 100 70 50 LCF-125-S 30 20 15 10 10 40 15 20 50 60 70 30 100 50 45 40 35 30 25 20 L WA dB(A) 40 50 60 70 100 150 200 300 400 q [l/s] 150 V q [m 3 /h] 500 V Hz 63 125 250 500 1K 2K 4K 8K K ok 7 7 -3 -6 -4 -8 -15 -17 Δ p t [Pa] 250 200 150 100 70 50 LCF-160-S 30 20 15 10 10 40 15 20 30 50 60 80 100 50 45 40 35 30 25 20 40 50 60 150 200 L WA dB(A) 80 100 150 300 400 500 q [l/s] 200 V q [m 3 /h] 700 V Hz 63 125 250 500 1K 2K 4K 8K K ok 10 9 -3 -6 -4 -10 -16 -14 Δ p t [Pa] 250 200 150 LCF-200-S 100 70 50 30 20 15 10 20 80 30 100 40 50 150 200 50 45 40 35 30 25 20 100 300 400 L WA dB(A) 150 500 200 700 q V [l/s] 1000 q V [m 3 /h] Hz 63 125 250 500 1K 2K 4K 8K K ok 7 6 -3 -6 -6 -6 -14 -16 lindab | we simplify construction LCF Lindab reserves the right to make changes without prior notice 3 2020-12-16

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