. Catalog Diffusers Lattices AWT


Wester_m 15.03.2024

Impact-resistant ventilation grilles made of aluminum with fixed horizontal slats

Ventilation grilles with specially profiled lamellas (rectangular cross-section)

Standard sizes 325 × 125 – 1225 × 325 mm
Air flow level 17 – 950 l/s or 61 – 3420 m³/h
Front panel made of aluminum with anodized finish
Tested for reliability when used in gyms
Outer frame with hidden holes, width 30 mm

Additional equipment and accessories

The front panel is painted in RAL CLASSIC colors
Mounting frame


Ventilation grilles of the AWT series are used in supply or exhaust ventilation
For gyms
Meets the shock resistance requirements of DIN 18032, part 3
Directional supply of supply air for mixing ventilation
For systems with variable and constant air flow
Temperature difference between supply air and room from –12 to +4 K
For installation in walls, window sills and rectangular ducts


Fixed slats
Secret holes

Standard sizes

Nominal length: 325, 425, 525, 625, 825, 1025, 1225 mm
Nominal height: 125, 225, 325 mm

Other sizes to order.


Ventilation grilles are air distribution devices for ventilation and air conditioning systems for supply and exhaust air. They direct supply air into the room. Ventilation grilles with adjustable slats allow you to change the direction of air flow if necessary. The result is a mixing of air flows in comfort zones and industrial areas, with good distribution of air currents throughout the room.

The ejection level decreases as the air flow decreases, i.e. The air flow speed decreases as the distance from the grille increases. The distance at which the air flow speed reaches a certain value, e.g. 0.2 m/s is called projection distance. The supply air jet from wall grilles installed close to the ceiling reaches a greater projection distance than the free air jet (from a grill installed far from the ceiling). Single grilles, grille groups and sections achieve different projection distances.

In cooling mode, it is necessary to take into account the deviation of the jet in relation to the working area, which increases with an increase in the temperature difference between the supply air and the air in the room and a decrease in the flow rate. In heating mode, the supply air stream is deflected towards the ceiling. This does not have a negative effect on the air flow rate in the work area, but may affect the overall ventilation of the room.

① Outer frame
② Longitudinal slats
③ Center pillar

Consultation / Order

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