Aluminum Round Ceiling Diffuser

The Aluminum Round Ceiling Diffuser is a high-performance HVAC air distribution terminal designed for balanced and efficient supply air diffusion in residential, commercial, and industrial ventilation systems. It ensures uniform airflow distribution while maintaining stable indoor thermal comfort in modern building environments.

Engineered with a multi-ring concentric structure, this diffuser delivers 360° circular airflow distribution, making it suitable for both new HVAC installations and retrofit ceiling ventilation projects.

Important Size & Selection Guidance

To ensure correct installation and airtight performance, please measure the ceiling duct opening before ordering.

We offer a wide range of standard neck duct sizes:

Ø100 mm (3.94")
Ø150 mm (5.91")
Ø200 mm (7.87")
Ø230 mm (9.06")
Ø250 mm (9.84")
Ø300 mm (11.81")
Ø350 mm (13.78")
Ø380 mm (14.96")
Ø400 mm (15.75")
Ø450 mm (17.72")
Ø500 mm (19.69")
Ø530 mm (20.87")
Ø550 mm (21.65")
Ø600 mm (23.62")
Ø650 mm (25.59")

Custom neck diameters are available for engineering and project-based requirements.

Material & Surface Finish

Manufactured from high-strength extruded aluminum alloy for long-term durability and corrosion resistance.

• Material: Solid aluminum alloy
• Surface finish: Electrostatic powder coating
• Standard color: RAL 9016 matte white (default)
• Custom option: Full RAL color matching available

The powder-coated surface ensures a clean architectural appearance and stable performance in various indoor environments.

Air Distribution Performance

This diffuser uses a precision-engineered multi-ring concentric design to optimize airflow diffusion and improve indoor comfort conditions.

Key performance benefits include:

• 360° uniform circular airflow distribution
• Stable supply air with no direct draft
• Improved indoor temperature balance
• Reduced air stratification near ceiling zones
• Compatible with both cooling and heating HVAC systems

Problems This Product Solves

• Uneven air distribution from ceiling diffusers
• Draft discomfort caused by direct airflow
• Temperature imbalance in occupied spaces
• Poor air mixing in HVAC ceiling systems
• Inefficient airflow diffusion in large rooms

Installation System

Designed for fast and reliable ceiling installation:

• Pre-drilled flange mounting holes
• Screw-fixed installation system
• Compatible with standard duct connections
• Suitable for new construction and retrofit replacement

This structure simplifies installation and reduces on-site labor time.

Application Scenarios

Widely used in HVAC ceiling ventilation systems for:

• Residential apartments and houses
• Hotels and hospitality projects
• Office buildings and commercial spaces
• Shopping malls and retail environments
• Airports, stadiums, and public buildings
• Kitchens, bathrooms, bedrooms, and living areas

Key Features

• Multi-ring concentric airflow design
• 360° uniform air distribution performance
• High-strength aluminum alloy construction
• Corrosion-resistant powder-coated finish
• Wide range of standard neck sizes
• Custom size and RAL color options available
• Easy screw-fixed ceiling installation

Custom Manufacturing Capability

We support full OEM and project-based manufacturing:

• Custom duct neck diameters
• Custom diffuser dimensions
• Full RAL powder coating color options
• OEM branding and private label production
• Engineering drawing-based customization

All products are manufactured strictly based on project requirements rather than stock inventory.

Production & Availability

• Made-to-order production only
• No stock sizes available
• Engineering samples available upon request

Related HVAC Air Distribution Products

To help you select the right air distribution system, you may also consider:

- Aluminum Square Ceiling Diffuser (balanced multi-direction airflow)
- Aluminum Linear Slot Diffuser (high mixing efficiency for comfort cooling)
- Aluminum Ring Jet Diffuser (long-throw air distribution for high ceilings)

Quotation Requirements

Pricing is based on project specifications:

• Duct size and diffuser dimensions
• Quantity and project scale
• Color and surface finish requirements
• Installation environment and application type
• Technical drawings (recommended for accuracy)

Please provide project drawings for accurate quotation.

We typically respond within 24 hours.