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 profileConstruction: Set of individually fixed straight bladesBlade: Half chevron shapePowder coating color: White RAL 9010, RAL 9016 or anodized, or as customized.Cores: Fixed coreAccessory: Opposed blades damper, clip2. Type RG-VB return grille fixed curve blades.Material: High-quality aluminum extruded profileConstruction: Set of individually fixed curved bladesBlade: Eyelash shapePowder coating color: White RAL 9010, RAL 9016 or anodized, or as customized.Cores: Fixed coreAccessory: Opposed blades damper, clip3. Type RG-VD return grille hinged type with louver blade Material: High-quality aluminum extruded profileConstruction: Set of individually fixed straight louver type bladesBlade: Louver shapePowder coating color: White RAL 9010, RAL 9016 or anodized, or as customized.Cores: Hinged type with removable coreAccessory: Opposed blades damper, clip, or filterThe 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.
A return air grille is an HVAC air vent duct cover. It is the ducted unit air intake grille that takes the air in the room and returns it to the air conditioning or ventilation system. The circulation system that air from the building is sucked into the ducted system to the indoor fan unit before being conditioned and delivered back to the rooms as conditioned air. The return air grille regulates the airflow in your room by covering ducts. It pulls air back into the heating and air system for return function. Its design is to pull air out of a room, ensuring energy efficiency and relative comfort while also providing circulation back to the central heating or air conditioning unit.The return air grille is made of high-quality extruded aluminum profile construction with the advantage of corrosion resistance. Usually, the grille is in white color or anodized, but another color is also available. The shape of the grille can be square or rectangular type. That the size of the air grille is customized, It can meet different demands of the product.This type of return air grille comes with specially designed blades. The blade geometry and distance between two adjacent blades are accurately calculated to achieve maximum airflow performance and create an aesthetically pleasing appearance. They consist of a flange of 30mm which is rigidity.We have the grilles with a fixed core or removable core. The removable core is the hinged type that can be fitted with a washable filter. With a filter makes the recirculated air purer. This can also in the long run reduce the amount of cleaning required for ducts.The return ducts are usually placed in hallways, under stairwells, or in larger open areas. This placement ensures that they will be able to pull in enough air to take back to the HVAC equipment. These require to be covered by a return air grille that will ensure that the duct is protected. It is considered necessary to fit filters over such grille, which in turn can lead to higher efficiency in cooling or heating.Usually, the cooling or heating system will have air being pushed into rooms or spaces through a system of ducts. This increase the air pressure in the conditioned area and also sometimes will even prevent any further air from entering unless a circulating system is set up to relieve the pressure. This is done normally through return ducts which allow the air to be recirculated or completely vented to the outside in certain cases.In order to secure the grille into place, we can supply customers with easy mounting clips, or make holes with screws for easy installation which would save time.
Phenolic duct board is mainly made of phenolic foam. Phenolic duct board is a new type of fire-retardant, fireproof and low smoke building board. It has the advantages of good thermal insulation performance, waterproof, non-toxic, lightweight, and so on. It has been used in many fields, such as transportation, ships, aviation, housing construction, petrochemical, and other pipe insulation fields, especially in developed countries.The phenolic pre-insulated duct board is made of phenolic foam material, which is a polymer organic hard aluminum foil foam product and is foamed by thermosetting phenolic resin. phenolic foam duct board, known as "the king of thermal insulation materials", is a new generation of thermal insulation, fire protection and sound insulation materials. It has the characteristics of lightweight, fire prevention, non-combustion in case of an open fire, smokeless, non-toxic, no dripping, etc., and has a wide range of operating temperatures. Phenolic foam, as a safe and green new energy-saving building material, its advantages have been recognized by the construction department and the public security fire department.
Ventilation supply air grille is also called double deflection grille and supply air register. A supply grille covers the supply vents that are responsible for pumping air into a room or space. It’s available with a louver or damper to control airflow, or as an immobile vent cover. The grille can be installed in square ducts, walls, and ceilings.The supply air grille is made of high-quality extruded aluminum profile construction with the advantage of corrosion resistance and rigidity. We can supply in white color or anodized another color also available. And the size of the air grille is also customized. That can meet different demands for the product.The air grille is two layers of louver blades with front vanes horizontal and back vanes vertical, or with front vanes vertical and back vanes horizontal. The blades of the double deflection are movable. It can be fixed with steel or plastic bushings. This method of assembly ensures quiet, smooth, and rattle-free operation.You can move the blades manually and individually.The rear vanes usually are vertical and are used to direct the air in a straight blow or spread the air as required by the room layout. If required, air can be directed at an angle to one or both sides, and still retain a near parallel air stream pattern.The supply can be fixed with an opposed blade damper to control the airflow volume. Damper bladed is screw operated from the face opening, you can use the screwdriver to move the control part. A foam gasket is sealed around the back of the frame as an option to avoid air leakage.The supply air grille can be concealed fixing or countersunk holes screw fixing, for installation into an installation sub-frame or fixing onto an installation surface.