These fully assembled high-performance Duct Mufflers are non-toxic, fire-resistant, and use commercial grade acoustical neoprene foam made specifically for sound deadening.

Connect them to your fan and ducting and reduce your noise output by up to 25dba without reducing airflow.

Features:

• Flanged ends.
• Portable and light weight.
• Safe and effective operation.
• Easy to install and maintenance free.
• High-quality corrosion resistant galvanized sheet construction.
• Wave crest polyurethane sponge can offer excellent sound and vibration absorption.
• This high-performance sound absorbing foam lining can reduce noise by up too 50%.
• Moisture resistant - great for use in damp environment.
• Extended collar and lip for easy duct hook-up.
• Air tight sealing tape included.