Air terminal devices for linear diffusers



Terminal units for air distribution of UDL series are constituted by a slot diffuser complete with insulated plenum.

UDL series units can be used both in supply and in extract for even very large rooms in terms of surface but with height relatively limited. They are then used for the air conditioning of offices, open space, banks, hotel halls, office buildings, shops, courthouses etc.. The possibility of joining them in solutions practically free in the longitudinal dimension, which offers great design flexibility combined with a design very simple and nice make this diffusers in minimally invasive internal architectures and can be easily matched with linear patterns of furniture, walls and ceilings.
In supply these diffusers allow a high induction ratio between supply air and room air. Also apply for the air intake and in this case are provided without deflecting blades.

Plenum or box of calm, allows to eliminate or reduce the no-uniformity of the velocity profile of the air coming from the supply duct. In this way, the throw characteristics of the diffuser will comply with those laid without asymmetry or directionality caused by unwanted velocity gradients.

Cestaro Bernardo Srl is able to offer in a short time both standard and special constructions of dimensional and construction specifications required by the customer.


Structure and dimensions


Frame material:             Aluminum

Deflectors material:       ABS black / aluminum

Finish:                          anodized / white RAL9010

These diffusers may have different design and geometry of the deflectors. They can also be supplied with different colors for minimum quantities.

Insulated plenum

Material:           galvanized steel

Insulation:         external

Fixing:              with side screws or with mounting bridge

Connection:      on side

For special constructions the plenum may be required not isolated, with or without equalizer and with or without regulation damper.


There are available 3 different models from 1 to 6 slots with length up to 2000 mm on single piece or with continuous solution by modulus.

Heat insulating material

Polyethylene adhesive in Class "1" reaction to fire (DM 26/06/1984). Applying external standard. Internal application on request.

Use condition

Maximum operating temperature: 70 °C


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