Diffusers and grilles are used to provide a covering to ventilation terminals. They are typically found where air conditioning or extraction systems are installed such as in hotels, offices, schools and other public buildings. Read More

Displacement units can direct supply air in the desired direction and include fixed blade, louvred, bar and deflection diffusers.

An air valve is an adjustable diffuser that can be opened and closed on demand.

Different types of grille are available for exhaust air, return air and transfer air.

Decorative grilles are used where appearance is important, and can be specified in finishes such as polished brass, chrome or nickel. They typically have a perforated, mesh or linear slot format. 

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Diffusers and grilles - helping you find the best solution for your project.

  • TROX UK: High Capacity Drum Jet Diffuser - Type DJ
    High Capacity Drum Jet Diffuser - Type DJ
    Type DJ high-capacity drum jet diffuser for long throw, supply air applications. Suitable for exposed duct mounting or sidewall installations; volume flow rate range 138-2000 l/s or 500-7200m3/h; grille face made of...
  • TROX UK: Ceiling Swirl Diffusers
    Ceiling Swirl Diffusers
    TROX is able to manufacture a range of ceiling swirl diffusers to meet most requirements including: fixed or adjustable blades; all types of ceiling system including exposed ceilings; manual or motorised adjustment; circular...
  • TROX UK: Ventilation Grilles - Floor Installation
    Ventilation Grilles - Floor Installation
    TROX offers single ventilation grilles and horizontal run sections with special profiled blades. Nominal sizes: 300x75-1800x300mm and horizontal run sections. Volume flow rate range: 17-1350 l/s or 6-4860 m³/h. Grille face...
  • TROX UK: Slot diffusers - Types VSD and ALS
    Slot diffusers - Types VSD and ALS
    Slot diffusers are a very popular product within the TROX family of grilles and diffusers. They are generally suitable for continuous assembly and can be inconspicuously installed parallel to linear light arrays: diffuser...
  • TROX UK: Ceiling Diffuser
    Ceiling Diffuser
    type ADT ceiling diffusers are used as supply air or extract air diffusers for comfort zones; attractive design element for building owners and architects with demanding aesthetic requirements; horizontal 1, 2, 3, or 4 way...
  • TROX UK: Ventilation Grilles - Wall, Sill and Duct Installation
    Ventilation Grilles - Wall, Sill and Duct Installation
    TROX is renowned for its grille and diffuser manufacture. With an extensive product range, the ventilation grilles available cover many applications and requirements
  • TROX UK: Heavy Duty Floor Grille - Type AFG
    Heavy Duty Floor Grille - Type AFG
    Type AFG heavy-duty floor grilles are ideal for areas with prolonged foot traffic and/or rolling loads (such as atria or data centres): exceeds the requirements of BS-EN 13264:2001 heavy and extra heavy structural...
  • Elefant Gratings: Type SP steel floor ventilation grilles
    Type SP steel floor ventilation grilles
    Elefant Gratings
    Elefant Gratings offers Type SP steel floor panels that are suitable for ventilation applications
  • TROX UK: Circular Floor Diffuser - Type FBA
    Circular Floor Diffuser - Type FBA
    TROX floor diffusers are produced in aluminium (FBA) and plastic (FBK). Their select variety of surface structures and colours makes them an attractive design element for building owners and architects. The introduction of...
  • Brooke Air: KE supply air valve
    KE supply air valve
    Brooke Air
    KE air valves are aluminim air terminals for supply applications. They are ideally suited for low air volume applications such as domestic residences or hotel rooms. They have an aerodynamically profiled, adjustable and...
  • Western Expanded Metal Industries Co: Ventilation profiles
    Ventilation profiles
    Western Expanded Metal Industries Co
    Metal mesh ventilated profiles are used for ventilation and drainage applications. A wide range of sizes is available.
  • Brooke Air: RCSD reversible louvre grilles
    RCSD reversible louvre grilles
    Brooke Air
    RCSD grilles are are adjustable supply air grilles with a reversible louvre. The RC reversible core grille is particularly suited to cill and sidewall applications requiring an attractive, versatile air terminal. The close...
  • Brooke Air: Architectural perforated grilles - brass
    Architectural perforated grilles - brass
    Brooke Air
    Perforated brass mesh is offered for use with natural, convection or forced ventilation systems, for supply or extract applications, to cloak apertures or enhance design. Handmade perforated brass meshes are manufactured to...
  • Brooke Air: RGD Rigidcore floor grille
    RGD Rigidcore floor grille
    Brooke Air
    RGD Rigidcore grilles are designed for use with under floor perimeter heating or ventilation systems and are ideal for applications requiring a lay-in core. Rigidcore grilles are available in section lengths up to 600mm and...
  • A & H Brass: Fixed blade brass linear floor grille
    Fixed blade brass linear floor grille
    A & H Brass
    Floor grilles are made to order. They are available framed and unframed in a number of different finishes.
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Diffusers and grilles- helping you find the best companies for your project.