Zehnder ComfoWell attenuator, CW-S 420

Data Table

Label	Value
Catalogue number	990323504
GTIN	7630015273354
Surface protection	Sendzimir galvanised
Height	241 mm
Width	236 mm
Connection 2	Other
Nominal duct width	420 mm
Damping 1000 Hz	8.1 dB
With inspection opening and cover
Damping 4000 Hz	7.8 dB
Damping 2000 Hz	14.4 dB
Connection 1	Other
Damping 125 Hz	4.6 dB
Damping 250 Hz	6.4 dB
Air extraction
Damping 500 Hz	10.6 dB
Bottom connection
Expansion link finish	Other
Nominal duct diameter, main duct	Other
With edge links
Nominal duct height	230 mm
Material	Sendzimir-galvanised steel
Length	500 mm
With flow approach cap
Type of housing	Part with main air duct
Resonance plate	None
Material	Steel
Connection main duct	Other
Damping 63 Hz	3 dB
Material quality	Other
Max. medium temperature (continuous)	80 °C
Air supply
Max. air volume	440 m³/h
Damping 8000 Hz	6.7 dB
Length	436 mm
Embeddable in concrete

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