CLEARANCE: Inline Duct Muffler**DOES NOT QUALIFY FOR FREE SHIPPING Size:8" mineralized phosphate

mineralized phosphate

Physical structure

while it may sound like a no brainer

Because it is so lightweight

CLEARANCE: Inline Duct Muffler**DOES NOT QUALIFY FOR FREE SHIPPING Size:8" mineralized phosphateMegaMass Duct Muffler Inline Fan Blower Silencer Noise Reducer Perfect for reducing noise from fans and carbon filter systems Extended collar and lip for easy duct hook up Moisture resistant great for use in a damp environment Safe and effective operation Two flanged ends Safe and effective operation The thickness of sound absorbing foam has been upgraded to 3 1 4" (that is more effective than 1 1 2" or 2" in the market) High quality corrosion