DACKA is a rectangular duct silencer in galvanized steel* with baffles (splitters) filled with Acutec® attenuation material.
Acutec® is a hygienic and washable polyester absorbtion material with high airflow and shock resistant non-woven fleece finishing and no loose fibres.
Connection measurements:400 x 300 - 3000 x 3000.
Bigger silencers are reinforced by an outer modular frame.
Connection frame possibilities: IT- (LS), EURO-20 (LSM20) or EURO-30 (LSM30).
Silencers can be ordered with baffles protected by perforated plate; additional thermal insulation 50mm (LE50) or more and with fire insulation on request.
Silencers with TO empty section are available with inspection hatch, (see our website for models). Fully cleanable and openable silencers you will find in the product range: DACKA-A.
Silencers are in air tightness class C.
All acoustical measurements and test methods have been done by Oy Lindab Ab own Labo along EN-standard ISO 7235:2003 -"Acoustics-Measurement procedures for ducted silencers"- and by VTT, the Technical Research Centre of Finland.
*Every silencer can be made along special client requirements:
- Stainless Steel (EN1.4301 - EN1.4404) in different thicknesses
- Black steel: S 235
- Welded flanges-NORSOK flanges
- Fire resistant mineral wool
- Special industrial silencers
- Exhaust silencers
- Painted silencers.
Please specify seperately!