lindab | acoustic solutions Rectangular straight silencer DLD Dimensions b a l Description DLD has a conventional design with dimensions that not exceed the corresponding connection dimensions. The silencer can be manufactured in all standard duct sizes. Design DLD has an outer sheet casing of trapezoidal corrugated sheet metal for stability and reduced risk of natural oscilla- tion. DLD is designed for low air resistance with baffle combina- tions that attenuate particularly low-frequency noise well. The type of insulation material has been developed to pro- vide good noise properties, low weight and to be cleanable. DLD meets the requirements of air tightness class C and pressure class 2 according to EN 1507:2006. DLD is equipped with joining profile type RJFP or LS. Tools for dimensioning and planning The software lindQST, DIMsilencer and Cadvent offer fea- tures for dimensioning and selection of products in an envi- ronment with 3D modelling. Computerised planning can be conducted with automatic presentation of noise levels, pressure drop etc. Tested according to ISO 7235 standard. Order code Product DLD aaaa x bbbb DLD Width in mm , (a) 400 - 2400 mm Height in mm , (b) 200 - 2400 mm Length in mm , (l) 500 - 2450 mm Code Accessories Specify your accessory type: TRA, TRB*, TRC*, AIA, AIB, AIA+TRB, AIA+TRC cccc dddd eee Example: DLD - 800 x 600 - 650 - 1012 - TRA Material is galvanized steel. Standard lengths (l) : 650, 1250, 1850, 2450 mm. Standard heights (b) : 300, 600, 900 , 1200, 1800 mm. Special materials and sizes, please contact Lindab sales. The silencer is also available with the following accesso- ries/ options: TRA = Non-insulated inspection hatch. TRB = Hatch intended for external insulation.* TRC = Hatch intended for external insulation.* AIA = 50 mm fire protection insulation. Note! a and b dim. increase by 100 mm. AIB = 100 mm fire protection insulation. Note! a and b dim. increase by 200 mm. AIA+TRB = 50 mm fire protection insulation and the appropriate cleaning cover. Note! a and b dim. increase by 100 mm. AIB+TRC = 100 mm fire protection insulation and the appropriate cleaning cover. Note! a and b dim. increase by 200 mm. The dimension of the hatches is adapted for cleaning and inspection of all baffle spacings. * Specify insulation thickness when ordering. We reserve the right to make changes without prior notice 35 2017-12-11
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