Aluminum Round Weatherproof Louvre

The Aluminum Round Weatherproof Louvre is a high-performance exterior ventilation terminal designed for rain protection, airflow control, and duct safeguarding in outdoor HVAC systems. It is widely used as a wall, soffit, or façade-mounted air intake or exhaust cover in residential, commercial, and industrial ventilation applications.

Engineered with a 45° angled louver blade structure and integrated insect protection mesh, it provides reliable resistance against rainwater ingress, dust, debris, and insects while maintaining stable ventilation performance.

Size Information & Custom Options

Standard neck duct sizes available:

D100mm (3.94")
D150mm (5.91")
D200mm (7.87")
D250mm (9.84")
D300mm (11.81")
D350mm (13.78")
D400mm (15.75")
D450mm (17.72")
D500mm (19.69")

Custom neck diameters and full RAL powder coating color options are available for project-specific requirements.

Each unit is manufactured strictly according to duct opening dimensions and installation conditions to ensure proper fit and stable performance.

Weather Protection Design

This round weatherproof louvre is engineered for long-term outdoor performance and reliable ventilation efficiency.

Key functional advantages include:

• 45° angled blade structure prevents rainwater backflow
• Integrated insect mesh blocks dust, debris, and small insects
• Maintains continuous airflow while protecting HVAC duct systems
• Suitable for long-term exterior wall and soffit exposure
• Reduces maintenance requirements for ventilation outlets

The design balances weather resistance and airflow efficiency for demanding outdoor environments.

Problems This Product Solves

• Rainwater entering HVAC duct systems
• Insect and debris contamination of ventilation openings
• Poor protection of exterior exhaust outlets
• Reduced system performance due to outdoor exposure
• Frequent maintenance issues in external ventilation terminals

Material & Construction

• Material: High-strength extruded aluminum alloy
• Finish: Electrostatic powder coating
• Corrosion resistance: Suitable for outdoor and semi-exposed environments
• Mesh: Integrated fine insect protection screen
• Structure: Rigid circular frame for stable wall mounting

Designed for long-term durability in exterior HVAC applications.

Installation Guidance

Designed for simple field installation:

• Insert unit into pre-cut wall / soffit opening
• Fix with self-tapping screws (not included)
• Seal perimeter with silicone sealant for waterproofing (not included)
• Ensure correct alignment before final tightening

Installation with protective gloves is recommended to avoid surface damage.

Application Scenarios

Suitable for HVAC exhaust and intake systems in:

• Bathroom exhaust ventilation
• Kitchen ventilation systems
• Residential exterior wall ventilation
• Garage and storage ventilation
• Office and commercial building exhaust
• RV, camper, and mobile ventilation systems
• Exterior soffit retrofit projects

Key Features

• 45° angled rainproof louver design
• Integrated insect and debris protection mesh
• High-strength aluminum alloy construction
• Corrosion-resistant powder-coated finish
• Suitable for wall and soffit installation
• Fully customizable sizes and colors
• Long-term outdoor ventilation stability

Engineering Notes

• Always verify duct opening dimensions before installation
• Regular mesh cleaning improves airflow efficiency
• Proper sealing ensures optimal waterproof performance
• Designed for both exhaust and intake ventilation applications

Custom Manufacturing Capability

We support full OEM and project-based manufacturing:

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

Production & Availability

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

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 Round Ceiling Diffuser (uniform 360° air distribution)
- 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:

• Size and duct diameter
• Project quantity and scope
• Finish and color requirements
• Installation environment
• Technical drawings (recommended for accuracy)

Please provide project drawings for accurate quotation.

We typically respond within 24 hours.