Description and Purpose

Metal ceiling diffusers are the terminal elements of a ventilation system responsible for air distribution in the room. Unlike plastic analogs, steel diffusers do not yellow over time, do not become electrified (do not attract dust), and have increased fire safety.

The design of most models features a rotating central disk, which allows for smooth adjustment of the airflow volume (system balancing). Installation is carried out into spiral air ducts or static pressure plenums.

Model Overview and Features

• Classic (DVS/DVS-P): The most popular solution. Divided into supply (DVS-P) with a convex disk for jet dispersion and exhaust (DVS) with a flat disk for efficient air intake.
• Flat Universal (KNI-RMI): Have a modern flat design that stands out less on the ceiling. They are universal — the same model is suitable for both supply and exhaust.
• Conical (DKF): Designed for supply systems with high airflow. Concentric rings form a powerful jet, allowing their use in rooms with high ceilings.
• Appearance: Standard color is white (RAL 9016). Thanks to powder coating, the finish is scratch-resistant. Repainting in any color from the RAL palette is possible upon request.

Dimensions and Characteristics

Classic Diffusers (DVS / DVS-P)

The most popular and affordable model. Exhaust diffusers (DVS) have a flat plate, while supply diffusers (DVS-P) have a convex one, ensuring correct flow aerodynamics.

Ø duct (mm)	Type
100	Supply / Exhaust
125	Supply / Exhaust
160	Supply / Exhaust
200	Supply / Exhaust
250	Supply / Exhaust

Flat Universal (KNI)

Designer series with a flat profile that looks more aesthetic in modern interiors. Universal design suitable for any system.

Ø duct (mm)	Article
100	VRDIKNI100
125	VRDIKNI125
160	VRDIKNI160
200	VRDIKNI200
250	VRDIKNI250

 Conical (DKF)

Specialized supply model. Creates a powerful, long-range air jet. The ideal solution for rooms with high ceilings where air needs to be "thrown" to the working zone.

Ø duct (mm)	Article
125	VRDIDKF125
160	VRDIDKF160
200	VRDIDKF200
250	VRDIDKF250
315	VRDIDKF315
400	VRDIDKF400

Standard color RAL 9016 (white). Other colors are available upon request (powder coating).

Installation and Components

• Installation method: Diffusers are installed into a mounting ring (usually included for DVS/KNI) or directly into the air duct/fitting.
• Sealing: Many models are equipped with a foam ring on the back for a tight fit to the ceiling and prevention of air leakage.
• Adjustment: Performed by rotating the central part (plate). After adjusting the position, the plate is fixed with a locknut.
• Materials: Clamps, tape, or other mounting elements may be required for connection to the ventilation system.