
An acoustic flexible transition connector used at the very end of an HDPE run, between the corrugated duct and the air diffuser. The sound-insulated hose decouples the rigid duct from the ceiling terminal, which breaks the path that fan noise would otherwise travel along. Its quick-fit joints make the final connection fast.
| Item | Specification |
|---|---|
| Available Sizes / Models | 75mm/110mm |
| Description | Sound-insulated flexible transition hose with quick-fit joints. Used as terminal connection between HDPE corrugated duct and air diffuser. Flexible bending layout, effectively reducing airflow noise, ideal for household fresh air ventilation end connection. |
| Material / Construction | Soundproof flexible hose + high-quality PP quick connection adapters |
Designed for our HDPE fresh air corrugated pipe and round ceiling diffusers. Also see the complete terminal connection kit.
Q: How much noise reduction does it give?
A: The acoustic hose reduces structure- and airborne noise transfer at the terminal. For higher attenuation, add a duct silencer further upstream.
Q: Which sizes are available?
A: The 75 mm and 110 mm versions are listed in the specification table below.
Q: Can it be fitted after the ceiling is closed?
A: It is normally installed at first fix before the ceiling is closed.





The southeast corner of the private entrepreneurship park in Huadian Town, Qihui County, Dezhou City, Shandong Province

