Excellent Chamber Type Spark Arresting:
Expected Attenuation is 24 to 28 dBA
Use a model MSA3 for quiet residential areas where background noise is relatively low and “critical� grade silencing with a spark arresting feature is required.
Example: For truly quiet residential areas where ambient noise levels are very low and the
sound of birds singing and the soft hum of air conditioning units may be the noticeable noise features.