Grilles range

Grilles and terminals

The Aldes range is extensive and covers all needs for self-balanced, humidity-controlled, gas CMEV, exhaust and heat recovery, for both extraction and air supply applications.
Exhaust grilles are installed in damp rooms and air supply grilles (where appropriate) in living rooms (sitting room, bedrooms, etc.).
This range also comprises fixed plastic or metal grilles

Discover the range

Grilles range
  • In an exhaust CMEV, the extract grilles placed in each room (kitchen, bathroom, WC) ensure sufficient and continuous extraction of indoor pollution (odours, humidity, CO2).
  • Self-balanced grilles are different from humidity-controlled grilles: 

    • Self-balanced extract grilles are defined by their exhaust airflow which varies according to the pressure difference between the duct and the dwelling. A self-balanced grille has an operating range of 50 to 150 Pa. 

    Humidity-controlled extract grilles are classified by their exhaust airflow (in m3/h) at a given negative pressure and depending on the relative humidity (%RH).

    A humidity-controlled grille has an operating range of 70 to 160 Pa.
    ACOUSTIC REQUIREMENTS
  • Acoustic regulations stipulate certain results: sound level perceived at a given location in a room (LnAT, DnT,A). These values depend on the terminal, but also on the room parameters (volume and shape, wall coverings, distance between measurement and product).

    • In Residential, acoustic requirements are dictated by the decision of 30 June 1999.

    In Non-residential, no requirements are applicable.


  • Using standard room configurations, we deduce the requirements for the grille itself independently of its environment (Lw, Dnew).

    • Lw: sound power = perception of airflow noise as it passes through a terminal.

    Dnew (C): soundproofing level = capacity of a terminal to cancel out the propagation of airborne noise from one room to another.


  • A sound pressure requirement LnAT < 35 dB(A) in a kitchen is equivalent to a requirement for the terminal that sound power Lw < 38 dB(A) if the surface area > 10 m².
  • A sound pressure requirement LnAT < 30 dB(A) in a primary room is equivalent to a requirement for the terminal that sound power Lw < 38 dB(A) if the surface area of an open plan kitchen > 30 m².
  • The insulation requirement applicable to the terminal may differ between two dwellings depending on the surface area of the room and the diameter of the collector.
  • Extract terminals should only be fitted in humid or equipment rooms: kitchen, bathroom, WC, laundry room, etc.
  • They must be installed at the top of a vertical wall or on the ceiling.
  • They must be at least 1.80 m above the ground.
  • Extract terminals must be accessible and removable (at a distance of at least 20 cm from the walls and not glued to the connecting duct).
  • It is advisable to fix the grilles in place using two Ø 5 mm screws to prevent them from turning when boost setting is used.
  • If cord-operated grilles are installed in the ceiling or above a piece of furniture, use a cord return system.