Collection: Plenum Boxes

PureClima plenum boxes are engineered to ensure efficient, balanced, and reliable air distribution across a wide range of HVAC applications. Designed specifically to integrate seamlessly with our frameless gypsum diffusers, these high-performance air distribution boxes provide a precise fit, clean architectural finish, and long-term durability.

Also referred to as air plenum boxes, HVAC plenum chambers, distribution boxes, air distribution plenums, duct transition boxes, air supply boxes, or diffuser plenum boxes, PureClima solutions play a critical role in optimising airflow between ductwork and ceiling diffusers.

Precision Airflow Control & Seamless Integration

Our plenum boxes act as an essential transition chamber between the ducting system and the diffuser, ensuring even air dispersion, reduced turbulence, and improved acoustic performance. When paired with PureClima frameless gypsum diffusers, they deliver a flush, minimalist aesthetic that aligns perfectly with modern architectural and interior design requirements.

Each plenum chamber is manufactured to exacting standards to support consistent airflow regulation, pressure equalisation, and efficient HVAC system operation.

Built for Performance, Durability & Flexibility

PureClima plenum boxes are constructed using high-quality materials designed for long service life in residential, commercial, and industrial environments. Whether referred to as ventilation plenum boxes, air handling plenums, ceiling plenum boxes, or duct connection boxes, they are built to perform under demanding conditions while maintaining structural integrity and airflow efficiency.

Available in multiple configurations, including:

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  Top entry plenum boxes
  
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  Side entry plenum boxes
  
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  Single-spigot and multi-spigot plenum chambers
  
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  Custom and bespoke plenum box solutions
  

Optional acoustic insulation can be incorporated to reduce noise transmission and enhance overall comfort.

Applications Across All Project Scales

PureClima plenum boxes are suitable for a wide variety of HVAC installations, including:

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  Residential homes and apartments
  
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  Offices and commercial buildings
  
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  Retail and hospitality spaces
  
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  Industrial and mixed-use developments
  

From small domestic ventilation systems to large-scale commercial air distribution networks, our air plenum solutions support efficient system design and professional installation outcomes.

Designed for Architectural Excellence

By combining technical performance with architectural precision, PureClima plenum boxes help deliver a superior HVAC finish. Whether described as diffuser back boxes, air mixing boxes, distribution plenums, or ventilation chambers, each unit is designed to enhance airflow efficiency while maintaining a discreet, high-end appearance once installed.

Why Choose PureClima Plenum Boxes

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  Optimised airflow distribution and pressure control
  
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  Seamless compatibility with frameless gypsum diffusers
  
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  High-quality, durable construction
  
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  Multiple standard and bespoke configurations available
  
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  Suitable for residential, commercial, and industrial HVAC systems
  
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  Clean, architectural finish for modern interiors
  

PureClima plenum boxes form the foundation of a high-performance air distribution system, delivering reliability, efficiency, and refined aesthetics for any HVAC project.