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AC Line Cover Kit

Brown Line Set Cover Reducer Coupling for Brick and Timber Exteriors, PVC Size Adapter for AC Pipe Trunking Systems

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  • Description: Colour-through brown coupling for the 75-series slimline line set cover system, moulded in our own factory. It is matched to brickwork, timber cladding and brown fascia boards on traditional homes. Pair it with the matching brown kit for one seamless run.
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Brown Line Set Cover Reducer Coupling

The reducer coupling steps between two different profile widths, for example where a 75 mm run from the indoor unit widens to 100 mm for a bundle carrying extra cables. It keeps the transition inside the trunking instead of leaving an open gap at the change of size. 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.

Key Features

  • UV-stabilised rigid PVC — exterior grade, matched to the line set cover system
  • Snap-on assembly — fits the standard base channel and cover of the series
  • Brown colour-through formulation — no visible scuffs or white cut edges on dark installs
  • Replacement part or bulk stock — supplied individually as well as inside complete kits

Technical Specifications

ItemSpecification
ComponentBrown Line Set Cover Reducer Coupling
MaterialRigid PVC (UPVC), UV-stabilised, high impact resistance
Profile75 mm slim series
ColourBrown
CompatibilityFits the AC Line Cover Kit series straight duct and covers
Supply formatSingle component, bulk pack or complete kit, OEM/ODM available

Why the Brown Finish Works Here

Brown answers the most common problem on traditional homes: dark brick, timber cladding and wood-grain fascia boards that no standard colour can match. The coupling sits quietly against these surfaces, and because the tone is mixed into the PVC itself it weathers at the same rate as the rest of the kit. On brick exteriors it is common to run the trunking vertically past a brick course; the brown finish keeps that run discreet without repainting anything on the wall.

Installation Reference

Brown Coupling installed on site - reference photo 1

Brown Coupling installed on site - reference photo 2

Brown Coupling installed on site - reference photo 3

Where It Is Used

  • Mini split, ductless AC and heat pump exterior line set runs
  • Extensions and repairs on existing brown line set cover installations
  • Project stock where installers carry fittings separately from straight duct

Frequently Asked Questions

Q: When do I need a reducer coupling?
A: Wherever two duct sections of different profile widths meet on the same run.

Q: Which size combinations are available?
A: Reducer combinations are produced to order. Confirm the exact pair you need with our sales team before the order is placed.

Q: Does the standard cover still fit over the reducer?
A: Yes. The reducer is closed with the matching covers of each width, so the run stays enclosed.

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