The Sunco Duct Single-Spigot Return Air Plenum is a lightweight, insulated return-air box designed to connect a return-air grille to one round flexible duct.
Manufactured from 21 mm foil-faced PIR ductboard, the plenum combines the return-air path and insulation into one compact assembly. Its tapered transition directs air from the rectangular grille opening towards the round spigot, helping reduce turbulence, pressure loss and return-air noise.
Key Features
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Single return-air spigot
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Designed for installation behind a return-air grille
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Manufactured from 21 mm PIR ductboard
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Approximate thermal rating of R0.95
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Tapered transition for smoother airflow
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Lightweight and easy to install
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Helps reduce return-air turbulence and noise
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Insulated construction helps prevent condensation
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Foil-faced internal and external surfaces
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Corrosion-resistant alternative to sheet-metal plenums
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Custom grille, spigot and body sizes available
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Australian manufactured by Sunco Duct
Specifications
| Specification | Details |
|---|
| Product Type | Single-spigot return-air plenum |
| Construction | 21 mm foil-faced PIR ductboard |
| Thermal Rating | Approximately R0.95 |
| Spigot Quantity | 1 |
| Spigot Type | Round flexible-duct connection |
| Spigot Size | Available to suit system requirements |
| Grille Opening | Custom manufactured to suit |
| Body Configuration | Tapered transition |
| Application | Residential and light-commercial return-air systems |
Made to order. Confirm the required flange size when ordering.
