| inside diameter | 76-254mm |
| Thickness of sound-absorbing cotton | 25~50mm |
| Anechoic performance |
10~20A(DB)/m |
| working pressure limit | 2500pa |
| Production length | customizable |
| Construction | Jacket-Colorful nylon fabric |
| sound-absorbing layer | Centrifugal glass wool/polyester fiber wool |
| guts | PVC micro perforated film |
| Perforation rate |
˃15% |
| Delivery specifications | 76-254mm |
| appliance | Fresh air system, all-air system supply and return air duct end muffling, can be indoor or outdoor surface mounted |
| characterization | The jacket is characterized by UV protection, anti-aging, rain protection and general corrosion resistance |
