The grey aluminium ducted heating bar grille 100x300mm accord air is a slim, high-performance diffuser designed for even temperature control in modern HVAC systems. Its low-profile frame and precision louvres make it suitable for both residential and commercial installations where space and aesthetics matter.
This guide covers key specifications, installation requirements, and performance factors to help you evaluate this grille for your ducted heating project. The following sections explain design details, suitability, and typical use cases.
| Product | Size | Material | Finish |
|---|---|---|---|
| Grey aluminium ducted heating bar grille | 100 x 300 mm | Aluminium alloy | Grey baked powder coat |
| Air control type | Accordion (accord) louvres | Adjustable downward flow | Compatible with standard dampers |
| Typical application | Supply or return in ducted systems | Drop ceiling or suspended install | Retrofit or new build |
| Maximum temp rating | 90°C | Airflow range | Low to medium velocity |
Design and build quality
Manufactured from durable aluminium, this 100x300mm grille resists corrosion and maintains its appearance over long service life. The grey baked finish blends with most ceiling and duct colour schemes, while the accord air louvre design directs airflow further into the room.
Each bar grille is assembled with tight joints to minimise noise, and the frame is engineered to support standard dampers for balancing. The grille fits most 100x300mm recessed ceiling modules and can be trimmed to match non-standard openings.
Installation considerations
Proper installation is essential for achieving smooth airflow and avoiding vibration. Mount the grille flush with the ceiling surface and secure it with provided clips or screws, ensuring the frame is level before tightening.
Pair the unit with correctly sized flex duct and insulated transitions to reduce pressure drop. Use fire-rated sealing membranes where required by local building regulations to maintain fire and smoke performance.
Performance and efficiency
The accord louvres create a broad discharge pattern, distributing warm air across the room rather than creating a concentrated draft. This layout supports efficient mixing, allowing the system to reach set temperatures with less runtime.
Because the grille is optimised for low-pressure ducted heating, it reduces the load on the fan and can lower energy consumption over time. Selecting the correct damper position during commissioning maximises efficiency and minimises noise.
Maintenance and long-term use
Routine maintenance involves checking for dust build-up on the louvres and wiping the grille surface with a soft, damp cloth. Avoid abrasive cleaners that could scratch the grey finish or damage the aluminium.
Inspect mounting points annually, especially in environments with high humidity or temperature cycling, to ensure the grille remains securely fixed. Replace worn gaskets promptly to preserve acoustic and thermal performance.
Key takeaways
- Grey aluminium finish resists corrosion and suits most ceiling designs
- 100x300mm size aligns with standard recessed ceiling modules
- Accord air louvres provide wide, directed airflow distribution
- Compatible with dampers for precise balancing and zoning
- Low-pressure design supports quieter operation and fan efficiency
- Suitable for both new build and retrofit ducted heating systems
- Regular cleaning and mounting checks maintain long-term performance
FAQ
Reader questions
Will this grille work with existing 100x300mm ceiling sections
Yes, the 100x300mm accord air grille is designed to fit standard recessed ceiling modules, making replacement straightforward without major modifications.
Can the louvres be adjusted to control airflow direction
Yes, the accord louvres allow manual adjustment to aim the discharge pattern where it is needed most within the room.
Is this grille suitable for use in a commercial office
Yes, its low-profile design and grey finish integrate well with office ceilings while providing reliable heating distribution at low to medium airspeed.
What damper setup is recommended during commissioning
Set the main duct damper and zone dampers to balance flow, then fine-tune this grille’s internal damper until the measured airflow matches the design requirements.