
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.
| Item | Specification |
|---|---|
| Component | Line Set Cover Coupling |
| Material | Rigid PVC (UPVC), UV-stabilised, high impact resistance |
| Profile | 75 mm slim series, PVC |
| Colour | White as shown; black, brown and ivory to order |
| Compatibility | Fits the AC Line Cover Kit series straight duct and covers |
| Supply format | Single component, bulk pack or complete kit, OEM/ODM available |
Dimensions of this fitting in the 75 mm series (PVC):
| Component | Dimensions A x B x C (mm) | Package quantity |
|---|---|---|
| Straight connector (coupling) | 50 x 81 x 50 | 60 pcs/unit |


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 fit every profile width?
A: Each coupling is matched to a specific profile width from 75 to 160 mm, so order it against the duct size on site.
The southeast corner of the private entrepreneurship park in Huadian Town, Qihui County, Dezhou City, Shandong Province

