SJ-77-K INABA DENKO Coupler for SLIMDUCT SD-77 (black)
€2.99 Incl. VAT
INABA DENKO SJ-77-K duct coupler connects SLIMDUCT SD-77 lineset cover to extend a continuous decorative lineset cover for air conditioner and heat pump pipework. The black lineset cover coupler forms part of the SLIMDUCT SD trunking system and features UV- and water-resistant PVC construction for indoor and outdoor installation.
- Fast delivery across Europe (5-10 business days)
- 30-day returns
- No customs duties within the EU
- Secure payments
INABA DENKO SJ-77-K Duct Coupler for black SD-77 Lineset Cover
INABA DENKO SJ-77-K duct coupler provides a secure connection between SLIMDUCT SD-77 straight duct sections, allowing the decorative lineset cover system to be extended across longer refrigerant pipe runs. Its black finish creates a clean, unified appearance for air conditioning and heat pump installations where exposed HVAC services need to be concealed.
Designed as part of the INABA DENKO SLIMDUCT SD trunking system, the SJ-77-K joins adjacent SD-77 ducts while maintaining a continuous exterior finish. The screw-fixed cover provides a secure assembly, and two stainless steel screws are included for installation.
Manufactured from durable UV- and water-resistant PVC, the black duct connector is suitable for indoor and outdoor applications. Combined with matching SLIMDUCT SD components, it contributes to a protective trunking system that keeps refrigerant pipes, condensate drainage and cables neatly covered and organised.
KEY FEATURES
- Duct coupler for SLIMDUCT SD-77 lineset cover
- Connects two straight duct sections for extended installation runs
- Creates a continuous decorative trunking system for refrigerant pipework
- Helps achieve a clean and unified finish between adjoining lineset covers
- Complete system helps conceal and protect refrigerant pipes, cables and drain lines
- Screw-fixed cover for secure installation
- Includes 2 stainless steel screws
- Material: PVC
- UV-resistant
- Water-resistant
- Suitable for indoor and outdoor installation
- Operating temperature: −20 °C to +60 °C
- Colour: Black
- Easy to install
- Made in Thailand
DIMENSIONS

APPLICATIONS
The SJ-77-K lineset cover connector is designed for extending SLIMDUCT SD-77 straight duct installations where multiple sections are required to cover longer pipe routes. It provides a practical connection while preserving the consistent appearance of the black decorative trunking.
Suitable for air conditioner and heat pump installations, the coupler can be used as part of a complete SLIMDUCT SD system for covering and protecting insulated refrigerant pipes, condensate drain lines, electrical cables and other HVAC service lines in residential and commercial applications.
| Weight | 0.075 kg |
|---|---|
| Dimensions | 230 × 70 × 130 mm |
| Product type | Duct Coupler |
| Series | SLIMDUCT SD-77 |
| Temperature range (°C) | -20 / +60 |
| Product features | UV-resistant |
| Indoor / Outdoor Usage | Indoor & Outdoor |
| Height (mm) | 67 |
| Width (mm) | 85 |
| Length (mm) | 50 |
| Weight (kg) | 0.07 |
| Material | PVC |
| Color | Black |
| Country of origin | Thailand |
| Brand | INABA DENKO |
| BAR/EAN | 4518301012302 |
| Manufacturer Code | 60874004424 |
| Manufacturer | INABA DENKO |
Related products
SC-77-W INABA DENKO trunking vertical elbow 90° (white)
SD-77-W INABA DENKO SLIMDUCT SD Lineset Cover 1 m (white)
INABA DENKO SLIMDUCT SD-77-W lineset cover for air conditioners and heat pumps conceals and protects refrigerant pipes, condensate drain lines and electrical cables. The 1 m white decorative lineset cover offers a practical solution for shorter HVAC pipe routes and integrates with the SLIMDUCT SD trunking system for indoor and outdoor installations.
SD-77-W INABA DENKO SLIMDUCT SD Lineset Cover 2 m (white)
INABA DENKO SLIMDUCT SD-77-W lineset cover for air conditioners and heat pumps conceals and protects refrigerant pipes, condensate drain lines and electrical cables. Made from UV-resistant PVC, the 2 m white decorative lineset cover integrates with the SLIMDUCT SD trunking system for indoor and outdoor HVAC installations.
SJ-100-K INABA DENKO Coupler for SLIMDUCT SD-100 (black)
The INABA DENKO SJ-100-K coupler connects SLIMDUCT SD-100 straight lineset cover sections to create a neat, continuous decorative trunking system for refrigerant pipes. The black lineset cover connector is made from durable, UV- and water-resistant PVC and features a screw-fixed cover, ensuring secure indoor and outdoor HVAC installations.
SJ-77-B INABA DENKO Duct Coupler for SLIMDUCT SD-77 (brown)
INABA DENKO SJ-77-B lineset cover connector provides a secure joint between SD-77 straight ducts for extending air conditioner and heat pump pipe covers. Finished in brown, this UV- and water-resistant PVC duct coupler helps maintain a clean, continuous SLIMDUCT SD trunking installation indoors or outdoors.
SK-77-A INABA DENKO trunking flat elbow 90° (Anthracite grey)
Inaba Denko SK-77-A trunking flat elbow 90° Slimduct Anthracite grey is a high-quality PVC pipe fitting designed for modern and professional HVAC line set installations. Ideal for sharp 90-degree horizontal turns, it ensures seamless routing of refrigerant pipes in heat pump and air conditioning systems while offering UV-resistant, weatherproof protection. With its sleek and stylish design, it seamlessly integrates into modern homes while providing long-lasting protection for your piping.
SK-77-K INABA DENKO trunking flat elbow 90° (Black)
Inaba Denko 90° trunking flat elbow SK-77-K (Black) is a high-quality PVC pipe fitting designed for modern and professional HVAC line set installations. Ideal for sharp 90-degree horizontal turns, it ensures seamless routing of refrigerant pipes in heat pump and air conditioning systems while offering UV-resistant, weatherproof protection. With its sleek and stylish design, it seamlessly integrates into modern homes while providing long-lasting protection for your piping.






























