SJ-77-B INABA DENKO Duct Coupler for SLIMDUCT SD-77 (brown)
€2.03 Incl. VAT
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.
- Fast delivery across Europe (5-10 business days)
- 30-day returns
- No customs duties within the EU
- Secure payments
INABA DENKO SJ-77-B Duct Coupler for SLIMDUCT SD-77
The INABA DENKO SJ-77-B duct coupler joins SLIMDUCT SD-77 straight lineset cover sections to create a clean, continuous decorative trunking system. It enables longer protective routes for refrigerant pipes, cables and drain lines in air conditioning and heat pump installations while maintaining a neat, consistent appearance.
The connector forms a neat transition between two SD-77 sections and helps keep the covered installation visually consistent. Its brown finish is suited to matching SLIMDUCT components where the trunking needs to blend with darker façades, timber-toned surfaces or interior finishes.
A screw-fixed cover keeps the connector securely assembled. Manufactured from durable PVC with UV and water resistance, the SJ-77-B can be used for both indoor and outdoor installations and operates at temperatures from −20 °C to +60 °C.
KEY FEATURES
- Lineset cover connector for SLIMDUCT SD-77 straight ducts
- Extends SLIMDUCT SD-77 across longer pipe runs
- Provides a neat joint between adjoining trunking sections
- Supports a continuous decorative refrigerant pipe cover
- Helps keep refrigerant pipes, drain lines and cables concealed and protected
- Part of the Brown SLIMDUCT trunking system
- Screw-fixed cover
- Includes 2 stainless steel screws
- UV- and water-resistant PVC
- Suitable for indoor and outdoor use
- Operating temperature: −20 °C to +60 °C
- Colour: Brown (RAL 6014)
- Made in Thailand
DIMENSIONS

APPLICATIONS
Use the SJ-77-B duct connector wherever two SD-77 lineset cover sections need to meet along an extended HVAC pipe route. It is suitable for residential and commercial air conditioning and heat pump installations, providing a finished connection without leaving a visible break between straight duct sections.
Together with compatible SLIMDUCT SD fittings, the coupler contributes to a modular decorative trunking system that organises, covers and protects refrigerant lines, condensate drainage and electrical wiring.
DOCUMENTS
SLIMDUCT SD Trunking System Catalogue
| 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 | Brown |
| Country of origin | Thailand |
| Brand | INABA DENKO |
| BAR/EAN | 4518301012289 |
| Manufacturer Code | 60874004423 |
| Manufacturer | INABA DENKO |
Related products
SC-77-A INABA DENKO trunking vertical elbow 90° (Anthracite gray)
SC-77-I INABA DENKO trunking vertical elbow 90° (Ivory)
SD-100-I INABA DENKO SLIMDUCT SD Lineset Cover 1 m (ivory)
INABA DENKO SLIMDUCT SD-100-I lineset cover 1m for air conditioners and heat pumps provides a neat protective route for refrigerant pipes, condensate drainage and electrical wiring. The ivory decorative lineset cover features a spacious 100 × 70 mm profile and integrates with the SLIMDUCT SD trunking system for flexible HVAC installations.
SD-100-K INABA DENKO SLIMDUCT SD Lineset Cover 1 m (black)
INABA DENKO SLIMDUCT SD-100-K lineset cover 1m for air conditioners and heat pumps provides a neat covering for refrigerant pipes, condensate drainage and electrical wiring. The black decorative lineset cover features a 100 × 70 mm profile and integrates with the SLIMDUCT SD trunking system for flexible HVAC installations.
SD-77-I INABA DENKO SLIMDUCT SD Lineset Cover 2 m (ivory)
INABA DENKO SLIMDUCT SD-77-I lineset cover 2m provides a neat and durable solution for concealing and protecting air conditioner and heat pump refrigerant pipes, cables and drain lines. This ivory straight duct forms part of the SLIMDUCT SD decorative trunking system and is UV-resistant for indoor and outdoor installation.
SD-77-K INABA DENKO SLIMDUCT SD Lineset Cover 2 m (black)
INABA DENKO SLIMDUCT SD-77-K lineset cover for air conditioners and heat pumps conceals and protects refrigerant pipes, condensate drain lines and electrical cables. The 2 m black decorative lineset cover is made from UV-resistant PVC and integrates with the SLIMDUCT SD trunking system for indoor and outdoor HVAC 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.






























