| Variable Inner Diameter（mm） |
76-63 112-102 127-90 127-112 152-112 165-112 |
| Thickness of sound-absorbing cotton | 25~50mm |
| Anechoic performance | 10～20A(db)/M |
| working pressure limit | 2500Pa |
| Production length | customizable |
| tectonic | Jacket-PVC laminated aluminum foil polyester film |
| sound-absorbing layer | Centrifugal glass wool/polyester fiber wool |
| liner | Micro perforated aluminum foil or PVC |
| perforation rate | ˃15% |
| Delivery specifications | customizable |
| appliance | Single and two-way flow fresh air equipment outlet end and duct, the end of the duct and the Connection between the outlet and the duct, the end of the duct and the air outlet |
| characterization | Both ends of the connection caliber can be customized according to the requirements of the field installation size, no need to install the There is no need to install a reducer adapter |
