Good points

Galvanized steel
Sound absorbing insulation
Adjustable valve with measurement function
Transition 125 to 100 mm

Acoustically Insulated Plenum for Ceiling Grille – 125 to 100 mm

The Econox acoustically insulated plenum is specifically designed for uniform air distribution and effective sound attenuation behind an Econox ceiling grille. The plenum captures air from the duct and evenly distributes it across the ceiling grille, ensuring the air enters the room calmly and draught-free. At the same time, the internal insulation dampens the airflow noise, resulting in a quieter installation. With a connection diameter of 125 mm, the plenum connects seamlessly to a ceiling grille of the same diameter. Thanks to the 125 to 100 mm transition, you can easily connect the plenum to a smaller duct without additional adapters.

Advantages and Features

Acoustic insulation: Reduces air noise and prevents transmission into the room, ensuring a quieter installation.
Integrated air distribution plate: Distributes air evenly across the grille for a comfortable indoor climate.
Adjustable damper with measurement function: Allows precise adjustment and monitoring of the airflow.
Compact installation height: Suitable for installation in suspended ceilings with limited space available.
Transition from 125 to 100 mm: Direct connection to ductwork with smaller diameter without extra reducers.

Installation and Maintenance

The plenum is mounted directly onto a 100 mm round duct and the grille is connected on the 125 mm side. The compact design simplifies installation in modular ceilings. The removable control damper provides easy access to the duct and plenum during maintenance or cleaning. This reduces service time and facilitates periodic upkeep. With this plenum, you achieve a quiet, easily balanced air supply that seamlessly connects to ceiling grilles and modern ventilation systems.

Applications

The acoustically insulated plenum from Econox can be used in combination with the following grilles:

Econox perforated ceiling grille for supply and extract
Econox steel ceiling grille with round outlet
Econox steel ceiling grille with round air outlet for supply and extract

Brand	Econox
Category	Plenums for adjustable perforated ceiling diffusers
GTIN	8719544339164
Manufacturer's item number	78999996
Article number	78999996

Specifications

Category code	59
Length	420 mm
Air supply	Yes
Width	238 mm
Height	140 mm
Material quality	Other
Embeddable in concrete	No
Connection main duct	Insert end
Max. air volume	2520 m³/h
Shape of branches	Round air duct
With inspection opening and cover	Yes
Type of housing	Complete
Nominal duct diameter, branches	125 mm
Bottom connection	No
Number of branches	1
Connection branches	Other
Nominal duct diameter, main duct	100 mm
Material	Steel
Surface protection	Sendzimir galvanised