Sound absorbing foam linen that effectively reduces the spread of sound waves from fans and carbon filter systems.

Duct Silencers | Hydroponic Supplies |

4" Inline Fan Noise Muffler Air Duct Silencer
This is a brand new Upgraded 4" Inline Duct Muffler for 4" high velocity fans/blowers. With durable galvanized sheet construction...
6" 260 CFM Aluminum Blade Duct Fan Vent Exhaust Blower
Features: Powerful and efficient performance - 260 CFM (cubic feet per minute) Higher efficiency than other 80cfm blowers. Can clear...

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