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 damp environment Safe and effective operation
4″X12”Inline Muffler
Features:
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 resistant galvanized sheet construction
Wave crest polyurethane sponge can offer excellent sound and vibration absorption
Moisture resistant – great for use in damp environment
Extended collar and lip for easy duct hook-up
Perfect for reducing noise from fans and carbon filter systems
Suggest to use with your ducting(not included) to connect with this muffler and your blower
Specifications:
4″ Flange
Overall Size: 6-1/2″ Dia. x 15-3/4″ L
Fit for Fans/Blowers: 4″ Flange
Surface Material: Durable Galvanized Sheet
Sound Absorbing Foam: Wave Crest Polyurethane Sponge
Fusion Point of Foam: 250 degree centigrade
The Influence to Hearing of Different Decibel:
0-20db: Very quiet, hardly feel
20-40db: Quiet, like soft voice
40-60db: General, like common talk indoor
60-70db: Noisy, bad for nerve
70-90db: Very noisy, nerve cells are damaged
90-100db: Noisy intensify, hearing is damaged
Package Includes:
1x Upgraded Duct Muffler W/ Thick Sound Absorbing Foam