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Type and function of return air grille

Type and function of return air grille

2022-06-27

The return air grille designed for return or exhaust air application is an essential part of the air conditioning. It’s an extract air variant for comfort zones and industrial zones. The function is to pull air back into the central heating or ventilation air system for reuse.

We have 3 types for the return air grille :


1. Type RG-VA return grille fixed straight blades.

Material: High-quality aluminum extruded profile

Construction: Set of individually fixed straight blades

Blade: Half chevron shape

Powder coating color: White RAL 9010, RAL 9016 or anodized, or as customized.

Cores: Fixed core

Accessory: Opposed blades damper, clip


2. Type RG-VB return grille fixed curve blades.

Material: High-quality aluminum extruded profile

Construction: Set of individually fixed curved blades

Blade: Eyelash shape

Powder coating color: White RAL 9010, RAL 9016 or anodized, or as customized.

Cores: Fixed core

Accessory: Opposed blades damper, clip


3. Type RG-VD return grille hinged type with louver blade
Material: High-quality aluminum extruded profile

Construction: Set of individually fixed straight louver type blades

Blade: Louver shape

Powder coating color: White RAL 9010, RAL 9016 or anodized, or as customized.

Cores: Hinged type with removable core

Accessory: Opposed blades damper, clip, or filter


The return air grille can be installed on the ceiling, on the wall, or in ducts. With different types for the return air grilles. You can take advantage of their design to choose the right one for your ventilation and construction decoration .


If you want the grille with a filter. Model RG-VD is a good choice. Its removable and hinged core sections are available for easy access to dampers and removable filters where fitted. The filter is removable and washable to be fitted in the inner frame of the grille. The return air grille and its filter needs to be maintained and cleaned at least once every quarter. Such cleaning can keep fresh air.


A return air grille connects to ductwork that allows air to return to any cooling or heating system. The openings that connect to ducts and other spaces for the returning air are normally covered with a supply or return air grille.

Having adequate airflow is good for the correction functional of an hvac system, this aim to increase the volume of air to an acceptable level. It is necessary to have an adequate amount of air returning back to the rooms through the return air grille. With the improvement and new technology for the air grilles. This is an easy way to establish exceptional airflow that may have a limited amount of free area with a different one that is designed to have a larger amount of open area.

The opposed blade damper is optional for the return grille, it is for balancing purposes, which allows you to control the airflow.

                 
    
                 
                 
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