Distribution boxes and manifold
Whether designing a new-build ventilation system or upgrading an existing one, choosing the right air manifold for ducts is essential. At Bels Europe, we offer some of the markets best ventilation plenum boxes and HRV air distribution components from trusted brands like Lindab Indomo and Nilan NilAIR – built to deliver quiet, balanced airflow and lasting energy efficiency.
Lindab Indomo – modular distribution boxes for every application
The Indomo range includes versatile, low-profile plenum boxes designed for optimal air distribution in both residential and commercial environments. Available in five types – MLU, MRU, MHU, MCU, and MHSU – this series supports a wide variety of layouts and performance requirements.
Key features of Lindab Indomo ventilation plenum boxes:
- Space-saving construction – slim enough for walls and suspended ceilings
- Flexibility – configure zones easily with multiple manifold options
- Professional-grade durability – built for demanding B2B ventilation setups
- Quick-install connections – simplify ductwork and reduce labour time
- Optimised airflow – stable pressure and balanced room-to-room ventilation
Managing a single-family home or a multi-zone commercial project, Lindab's air manifold systems offer a smart, scalable solution that integrates seamlessly into modern ductwork.
NilAIR Unibox & Combox – precision for healthy indoor air
If you are seeking a quiet, energy-efficient HRV air distribution system, look no further than the Nilan NilAIR Unibox and Combox series. Developed in Denmark and known for their sleek, compact designs, these units provide whisper-quiet ventilation tailored to modern living standards.
Available in multiple sizes:
Unibox – 8 or 12 connectors:
Ideal for larger residential zones and centralised layouts
Combox – 6 or 10 connectors:
Suited for smaller zones or decentralised room setups
What makes NilAIR Unibox and Combox worth the investment?
- Ultra-quiet operation – ideal for bedrooms, living areas, and home offices
- Tool-free installation – fast mounting with flexible hose connections
- Efficient airflow management – for use with HRV/ERV units
- Compact yet powerful – easily concealed in ceilings, floors, or utility spaces
These units serve both professional HVAC installers and quality-conscious homeowners looking for a dependable ventilation plenum box that supports clean, balanced airflows throughout the home.
Complete solutions – all in one place
At Bels Europe, we support your project from planning to installation - from sourcing components for a small retrofit or a large-scale B2B project, you will find durable, high-performance air manifolds for ducts and accessories ready for fast delivery.
Take your time to explore our full range of HRV air distribution boxes, plenum systems and ventilation accessories – and build smarter, quieter, and healthier living and working spaces.