lindab | for a better climate Rectangular straight low-built attenuatorLRLB Dimensions and sound data l Description Low height rectangular attenuator. Attenuation material is Lindtec glass wool. Insulation has a surface protector which can be cleaned with a rotating nylon brush or vacuum cleaner. LRLB meets the requirements of tightness class C and pressure class 2 according to EN 1507:2006. Tested according to ISO 7235 standard. LRLB is pressure equipped with joining profile type RJFP or LS1. For special materials and sizes, please contact Lindab sales. The attenuator is also available with the following acces- sories/options: TRA = Non-insulated inspection hatch. Order code Product LRLB a b l c d LRLB Width (a), in mm 150 – 1000 Height (b), in mm in step of 50 mm 150 – 400 Length (l), in mm 300*, 450*, 650, 950, 1250 Profile type (c) e.g. RJFP20, 30, 40 or LS1 Accessories (d) TRA *Length 300 and 450 mm only for heights 150 and 200 mm. Example: LRLB 600 - 200 - 950 - RJFP20 - TRA a a [mm] bl [mm] [mm] Insertion loss [dB] for centre frequency [Hz] 63 125 250 500 1k 2k 4k 8k 150-1000 150 300 1 3 7 8 11 11 9 7 150-1000 150 450 2 3 10 12 16 15 12 9 150-1000 150 650 3 7 15 19 20 17 16 14 150-1000 150 950 3 9 21 28 30 28 23 19 150-1000 150 1250 4 12 26 35 40 37 29 22 150-1000 200 300 2 4 5 7 9 10 7 6 150-1000 200 450 2 4 8 10 14 13 8 8 150-1000 200 650 4 6 11 13 15 14 12 12 150-1000 200 950 5 150-1000 200 1250 6 150-1000 250 650 5 150-1000 250 950 6 150-1000 250 1250 6 150-1000 300 650 4 150-1000 300 950 5 150-1000 300 1250 6 150-1000 350 650 4 150-1000 350 950 5 150-1000 350 1250 5 150-1000 400 650 2 150-1000 400 950 3 150-1000 400 1250 5 9 16 21 23 20 15 14 11 20 28 31 26 17 15 8 10 13 12 11 10 9 10 15 19 18 15 12 11 12 19 25 22 18 14 12 8 11 15 12 13 11 10 10 15 19 17 19 15 13 13 18 23 21 22 17 15 7 7 11 10 9 8 7 9 10 14 13 11 9 8 11 13 18 17 14 10 9 4 6 9 14 12 8 8 5 9 14 20 16 10 9 6 12 17 25 24 13 11 LindQST To select the appropriate silencer and optimize connection size and length for the best performance please use our online tool lindQST. Visit www.lindQST.com b Lindab reserves the right to make changes without prior notice 1 2022-10-04
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