This is a brand new Upgraded Inline Duct Muffler with size optional 4"/ 6"/ 8" for 4"/ 6"/ 8" high velocity fans/blowers. With durable galvanized sheet construction and sound absorbing foam lining, our duct muffler can reduce noise effectively and prevent your health from being hurt by noise. The special designed open cell foam in a convoluted pattern as egg crate is good for superior sound absorption. It can stop the spread of sound wave and allow air flow get through the ducting, perfect for reducing noise from fans and carbon filter systems. Make your indoor gardening fan obviously quieter.
Features:
- Upgraded inline duct muffler for 8" flange high velocity fans, with sound absorbing foam lining to reduce noises from fan and carbon filter systems in grow room
- Effective Sound Absorption - Egg-like wave crest polyurethane sponge for good sound and vibration absorption when air flow through the ducting, making a comfortable environment
- Moist-Resistance - Stainless-steel sheet housing for anti-corrosion , great in damp environment
- Easy Installation - Extended collar and lip for easy duct hook-up
- Use Suggestion - To connect with the muffler and fan through ducts
- Ideal for Heating, Ventilation and Air Conditioning System, to deliver air in grow tent, greenhouse and grow room
Specifications:
- Flange Diameter: 8"
- Fit for Fans/Blowers: 8" Flange
- Material: Stainless-steel
- Sound Absorbing Foam: Wave Crest Polyurethane Sponge
- Fusion Point of Foam: 250 degree centigrade
- Overall Dimension(DxH): 11" x 24"
- Net Weight: 7.9 Lbs (3.59 kg)
The Influence to Hearing of Different Decibel:
| Decibel |
Sense of Hearing |
| 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 With Thick Sound Absorbing Foam
