CALMO
- Very compact rectangular attenuator
- Excellent aerodynamic characteristics
- Vet low pressure drop via baffle staging
- Environmentally friendly acoustic material, approved by independent test institute: ISOVER Cleantec® PLUS
- Washable surface layer ISOVER Cleantec® PLUS
- Available with inspection hatch
- Fire protected version with 50 mm mineral wool also available
- Connection dimensions from 400x300 mm to 2200x2200 mm
- Can be supplied in kit form
- Standard of galvanized sheet steel to Corrosivity class C3
- Included in the MagiCAD database
CALMO is, due to its unique design with connection facing the side baffles, is suitable for use both in ducts and in direct connection to the air handling unit.
A space-saving, rectangular sound attenuator with recessed connection, that has excellent aerodynamic properties and good sound attenuation and very low pressure drop.
The CALMO is made as standard of galvanized sheet steel to Corrosivity class C3 (VVS-AMA 2019 Standard). The ISOVER Cleantec® PLUS sound attenuating material has been granted type approval. (Type approval no. 2706/92 with regard to cleaning, fibre entrainment, resistance to ageing emissions, washable surfaces, etc. The standard CALMO is supplied with slip clamp connections.
The CALMO is, due to its unique design with connections facing the side baffles, suitable for use both in ducts and in direct connection to ventilation units.
The slip-clamp connections on this product are intended for use as connection pieces for ducts only. The product should be suspended with a support beam under its entire width
CALMO - Standard range | ||||
Measurement (mm) | Working range | Attenuation | ||
B | H | L | m³/s | dB(A) |
400-2200 | 300-2200 | 650-2450 | 0-40 | 10-35 |
Document | Article | Document type | Date | Download |
---|---|---|---|---|
Approval 2706/92, Duct insulation (pdf 276.09kB) | ISOVER Cleantec PLUS | Quality | 08/09/2022 | |
Installation, maintenance (pdf 72.24kB) | MORENDO, CALMO, CADENZA, LARGO, LENTO | IOM Manual | 06/05/2025 | |
Attenuator with recessed connection for rectangular ducts (pdf 440.92kB) | CALMO | Technical catalogue | 03/05/2022 | |
Building product declaration (pdf 80.02kB) | CALMO | Quality | 08/01/2021 | |
Installation instruction (pdf 366.78kB) | Slip-clamp and Euroflange | IOM Manual | 04/05/2023 | |
Acoustics Overview (pdf 2.43MB) | CLA-A, CLA-B, SORDO-A, SORDO-B, SORDO-C, SORDO-P, SORDO-PF, CALMO, CADENZA, LARGO, LENTO, MORENDO, FACILE, ALD, CTM, CTK | Brochure | 08/04/2023 | |
VDI Certificate (pdf 141.93kB) | CALMO, CADENZA, LARGO, LENTO, MORENDO, FACILE | Quality | 16/05/2025 |
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