Vents and Diffusers

As a professional air movement equipment manufacturer, Quanda provides a wide array of vents and diffusers, including pressure relief vents, single deflection grilles, stationary louvers, double deflection grilles, hinged return air vents, aluminum linear grilles, aluminum square diffusers, aluminum circular diffusers, aluminum egg crate grilles, and weather louvres.
    1. QD-LFK1 Pressure Relief Vent
    2. QD-LFK1 Pressure Relief Vent The pressure relief vent is designed for an exhaust performance within a positive pressure air-conditioned room. It will automatically open at the design pressure difference to ensure a free flow path from a pressurized space and will not open when indoor pressure is lower than outdoor pressure, thus allowing for a single direction air flow.
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    1. QD-LFK2 Single Deflection Grille
    2. QD-LFK2 Single Deflection Grille The single deflection grille is a supply air outlet used in conjunction with aluminum filters. The regulator valve is installed behind the outlet and is designed to control the air volume. The single deflection grille is available in two types: type A and type B. Default is type A unless otherwise specified by the customer.
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    1. QD-LFK4 Stationary Louver
    2. QD-LFK4 Stationary Louver The stationary louver features an excellent ventilation performance, making it ideal for ventilation systems and waterproof exterior walls. The louver is easy to install on ceilings, walls, floors and other locations. We will also install a filter behind the outlet for air volume control according to customer requirements.
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    1. QD-LFK3QD-LFK3 Double Deflection Grille
    2. QD-LFK3QD-LFK3 Double Deflection Grille The double deflection grille blades are adjustable between 0°to 180°. With the different blade angles, the grill carries out air supply with different diffusion distances and angles. The outer frame of this grille can use wide border design or narrow border design so as to fit the requirements of the special location.
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    1. QD-LFK5 Hinged Return Air Vent
    2. QD-LFK5 Hinged Return Air Vent The hinged return air vent installs a frame, special door lock and hinge to the base of a stationary louver for filter and washer kit installation. Users lift the bolt on both sides to open the door and remove the filter. When the door closes, the spring door lock will automatically lock. The hinged return air vent is widely used in residential and hotel spaces.
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    1. QD-LFK6 Aluminum Linear Grille, 0° or 30° Blade
    2. QD-LFK6 Aluminum Linear Grille, 0° or 30° Blade The aluminum linear grille is manufactured using an aluminum profile and is suitable for air supply devices and return air devices with a linear or round distribution. The maximum length is 3.5m and the grille is easy to install on ceilings, floors, and side walls. The curbed angle outlet is designed to be either fixed or detachable depending on customer requirements.
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    1. QD-LFK7 Aluminum Square Diffuser
    2. QD-LFK7 Aluminum Square Diffuser Aluminum square diffusers are used as outlets in air conditioner systems as they provide air outlets in 1 to 4 different directions for airflow and can fit different ceilings. The frame and core are separable and easy to take apart. This square diffuser is an easy, convenient way to regular air volume, and is also equipped with an optional air volume control valve on the back side according to customer requirements.
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    1. QD-LFK8 Aluminum Circular Diffuser
    2. QD-LFK8 Aluminum Circular Diffuser The aluminum circular diffuser is manufactured using an aluminum alloy profile and features an aesthetically appealing surface to match any décor, a light weight and outstanding performance. It is easy to install and take apart, with the core easily separated from the frame. The circular diffuser makes it easy to regulate air volume, and is a popular selection for air volume control in malls, offices, hotels, restaurants and more.
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    1. QD-LFK9 Aluminum Egg Crate Grille
    2. QD-LFK9 Aluminum Egg Crate Grille Aluminum egg crate grilles can be used for air replacement or air extract purposes. The blades are manufactured using 19 x 1 and 12 x 0.8 high quality aluminum alloy profiles with a baking finish surface according to your requirements.
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    1. QD-LFK13 Weather Louvre
    2. QD-LFK13 Weather Louvre Weather louvres feature a similar structure to stationary louvers. The specially designed blades protect the HVAC system against rain and leaves, making it ideal for use as a fresh air intake on walls, a return air vent in offices and hotels, or decorative surfaces for outlets on ductwork or elevators.
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Dongguan Quanda Environmentally Friendly Ventilating Equipment Co. is a company specialized in the design and production of air movement equipment. Established in 2008, we manufacture an extensive selection of air handling systems that include centrifugal fans and blowers, axial fans, roof exhausters and ventilators, vents and diffusers, and sound attenuators. This equipment is designed for high-performance ventilation and smoke extraction system applications for many different building types, including high-rises, office buildings, factories, entertainment venues, and residences.