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Home > Products > Fire Dampers > Fixed Return Air Louver with 33mm Large Blade - Heavy Duty / Easy Installation

Fixed Return Air Louver with 33mm Large Blade - Heavy Duty / Easy Installation

Product Details

Place of Origin: Guangzhou,China

Brand Name: XINGJIN

Certification: GSG\TUV

Model Number: FHF-W/FHF-W-K/FHF-WS-FK/FHF-WSDC -K

Payment & Shipping Terms

Minimum Order Quantity: 50 set system

Price: Pricing based on quantity

Packaging Details: Plywood outer box with bubble bag or paper

Delivery Time: 15-20days

Payment Terms: T/T,L/C

Supply Ability: 30000set/month

Get Best Price
Product Details
Highlight:

33mm Large Blade Return Air Louver

,

Fixed Return Air Louver

,

Heavy Duty Return Air Louver

Product Name:
Ventilation Louvers Vent Cover Air Grille
Material:
ABS Plastic, Aluminum Alloy, Custom Wood
Function:
Smoke Exhaust/ventilation
Shape:
Customized
Installation:
Wall/Ceilling Mounted
Model:
LKF1-13
Product Name:
Ventilation Louvers Vent Cover Air Grille
Material:
ABS Plastic, Aluminum Alloy, Custom Wood
Function:
Smoke Exhaust/ventilation
Shape:
Customized
Installation:
Wall/Ceilling Mounted
Model:
LKF1-13
Product Description

Air outlet series


Product Introduction:

  The Fixed Return Air Louver (Single Layer Fixed Return Air Grille) is a high-efficiency return air device specifically designed for commercial building HVAC return air systems. Manufactured from high-strength extruded aluminum profiles with blades fixed at a 45° tilt, it offers excellent corrosion resistance and structural rigidity. This product returns indoor air to the air conditioning system for cooling or heating treatment before re-delivering it to the room, creating a complete air circulation loop and ensuring system efficiency and indoor air quality.

Technical Specifications:



Parameter Specification
Product Name Hinged Return Air Grille
Model DG-A
Function HVAC terminal return air / exhaust
Material Aluminum / ABS Plastic Steel
Blade Size 15 / 20 / 30 mm
Blade Angle 45° fixed tilt
Thickness 0.6 / 0.7 / 0.9 / 1.0 mm (customizable)
Shape Rectangular (square/circular customizable)
Certification ISO9001


Product Type:

Strip-shaped straight diffuser
 

  Used for indoor and circular supply and return air distribution; various shapes can be made according to decoration requirements; a black aluminum mesh can be installed behind the vent to conceal the inside; multiple vents can be connected in parallel with a splicing plate at the joint.

Fixed Return Air Louver with 33mm Large Blade - Heavy Duty / Easy Installation 0

Egg-shaped air vent
 

Simple structure, low pressure loss; used for ceiling air supply and return. Available in two sizes with egg-shaped grids; compatible with ventilators.

Fixed Return Air Louver with 33mm Large Blade - Heavy Duty / Easy Installation 1

Fixed oblique blade air outlet
 

Can be used in unidirectional (A) or bidirectional (B) oblique air supply mode;
Can be made into various shapes according to decoration requirements;
Can be used as a return air outlet;
Can be equipped with a multi-bladed opposing regulating valve;
Can also be equipped with a filter screen.

Fixed Return Air Louver with 33mm Large Blade - Heavy Duty / Easy Installation 2

Waterproof louvered air vents
 

The louvers are designed with a special shape to prevent rain from splashing into the interior. They are typically installed on exterior walls as fresh air vents. An aluminum mesh can be added behind the vent to prevent birds or insects from entering.

Fixed Return Air Louver with 33mm Large Blade - Heavy Duty / Easy Installation 3

For more styles and models, please contact us and we will provide you with the catalog​!

Applicable Locations:

The Fixed Return Air Louver is widely used in commercial building HVAC return air systems. Typical applications include:



Facility Type Specific Application
Hotels Guest corridor return air, banquet hall HVAC return air
Office Buildings Standard floor central AC return air grilles, meeting rooms
Hospitals Wards, clinics, clean area return air systems
Schools Classrooms, libraries, auditorium return air
Shopping Malls Public areas, retail store return air systems
Sports Venues Spectator areas, athlete lounges return air
Supermarkets Store return air systems
Factories Industrial ventilation return air systems
Apartments/Villas Residential central AC return air systems

Core Value: In commercial building HVAC systems, the Fixed Return Air Louver efficiently returns indoor air to the air conditioning unit, ensuring smooth air circulation. The 45° fixed tilt blade design provides uniform airflow distribution with low resistance, effectively improving overall HVAC system energy efficiency.


Product Advantages:

1. 45° Fixed Tilt Blades – Uniform Air Distribution

  • Optimized blade angle for stable, uniform return airflow

  • Low resistance, low noise – improves HVAC energy efficiency

  • Large blade (33mm) and small blade (26mm) options available

2. High-Strength Aluminum – Corrosion Resistant & Durable

  • Frame and blades made from high-quality extruded aluminum profiles

  • Surface treated with anodizing or electrostatic coating

  • Suitable for humid, dusty, and demanding environments

3. Robust Construction – Long-Term Stability

  • Well-designed integral structure – high strength, resistant to deformation

  • Suitable for long-term continuous operation in HVAC systems

  • Available in fixed or hinged configurations (hinged type allows easy filter cleaning)

4. Multiple Specifications – Flexible Customization

  • Face size, shape, and blade spacing all customizable

  • Thickness options: 0.6 / 0.7 / 0.9 / 1.0 mm (customizable)

  • Material options: Aluminum / ABS Plastic Steel

5. Easy Installation – Strong Compatibility

  • Compatible with various square/rectangular duct systems

  • Flexible installation methods to suit different building structures


Technical Specifications:



Parameter Specification
Product Name Fixed Return Air Louver (Single Layer Fixed Return Air Grille)
Model WG
Function HVAC terminal return air / air circulation
Material Aluminum / ABS Plastic Steel
Blade Size 15 / 20 / 30 mm
Blade Angle 45° fixed tilt
Thickness 0.6 / 0.7 / 0.9 / 1.0 mm (customizable)
Shape Rectangular (square/circular customizable)
Certification ISO9001

Installation & Maintenance Instructions:



Item Description
Installation Flush mount, flange connection or clip-in fastening to air duct
Maintenance Fixed type: regular blade surface cleaning; Hinged type: open panel to clean filter screen
Maintenance Interval Recommended every 3-6 months
Compatible Duct Square / Rectangular duct systems

Product Advantages:

1. 45° Fixed Tilt Blades – Uniform Air Distribution

  • Optimized blade angle for stable, uniform return airflow

  • Low resistance, low noise – improves HVAC energy efficiency

  • Large blade (33mm) and small blade (26mm) options available

2. High-Strength Aluminum – Corrosion Resistant & Durable

  • Frame and blades made from high-quality extruded aluminum profiles

  • Surface treated with anodizing or electrostatic coating

  • Suitable for humid, dusty, and demanding environments

3. Robust Construction – Long-Term Stability

  • Well-designed integral structure – high strength, resistant to deformation

  • Suitable for long-term continuous operation in HVAC systems

  • Available in fixed or hinged configurations (hinged type allows easy filter cleaning)

4. Multiple Specifications – Flexible Customization

  • Face size, shape, and blade spacing all customizable

  • Thickness options: 0.6 / 0.7 / 0.9 / 1.0 mm (customizable)

  • Material options: Aluminum / ABS Plastic Steel

5. Easy Installation – Strong Compatibility

  • Compatible with various square/rectangular duct systems

  • Flexible installation methods to suit different building structures


FAQ:

Q: Do you have the type of air vent I need? Could you please show me your catalog?
A: Of course. We have a complete catalog of various air vent types. Please contact us and we will provide you with a catalog. You can also send us pictures of the style and quantity you require, and we will check for you.
 
Q: Can you design a complete ventilation system for my factory?
A: Yes. Please provide us with your factory dimensions and area, and our professional designers will provide you with excellent advice.
 
Q: Can you do OEM and branding?
A: Yes, we offer OEM and ODM services, and we can also brand your products.
 
Q: Can you customize the materials and shapes of your air vents?
A: Yes, we are both a manufacturer and a trading company. We have our own factory and welcome your inquiries.


Why Choose Us:
Fixed Return Air Louver with 33mm Large Blade - Heavy Duty / Easy Installation 4