The coupling joins two straight duct sections end to end so the run continues without a visible break. It slides over the joint and locks both sections into one continuous channel, which is what keeps a long facade run looking like a single extrusion. This fitting is supplied in brown, moulded from the same colour-through PVC as the brown kit, so joints and corners stay invisible on the wall.
| Item | Specification |
|---|---|
| Component | Brown Line Set Cover Coupling |
| Material | Rigid PVC (UPVC), UV-stabilised, high impact resistance |
| Profile | 75 mm slim series |
| Colour | Brown |
| Compatibility | Fits the AC Line Cover Kit series straight duct and covers |
| Supply format | Single component, bulk pack or complete kit, OEM/ODM available |
Where the building is brick or timber-clad, brown blends in where lighter finishes would glare. The shade was selected against common European brick tones, and it is moulded through the full thickness of the PVC so scratches stay the same colour as the surface. Pair this coupling with the matching kit and a run that crosses brickwork, timber fencing or a brown fascia stays visually quiet from the street, with no repainting needed after installation.
Q: Do I need one coupling per joint?
A: Yes. One coupling covers one butt joint between two straight duct sections.
Q: Can couplings be ordered separately from a full kit?
A: Yes. Individual components are supplied for replacement, extension and bulk stock orders.
Q: Does the coupling match the duct colour?
A: Yes. The coupling is produced in the same colour as the duct it joins, so the joint stays invisible.
The southeast corner of the private entrepreneurship park in Huadian Town, Qihui County, Dezhou City, Shandong Province
