How many Sones is a quiet bathroom fan?

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Tags

1. #office
2. #measured
3. #television
4. #typical
5. #sones
6. #should
7. #rated
8. #sound
9. #levels
10. #noise
11. #refrigerator
12. #ventilation
13. #operation
14. #rustling
15. #quiet
16. #standard
17. #leaves
18. #bathroom