Eggcrate grilles (ECG) are suitable for extract air in either sidewall or ceiling applications where a high percentage free area is required. The aluminium eggcrate core is 12mm x 12mm with a standard flange configuration of 32mm. Available options are Opposed Blade Damper (OB), Removable Core (RC) and Core Only (CO), and Filter Frame. ECG grille frames are manufactured from extruded aluminium sections, the mitred corners being fully welded and linished. Standard finish is RAL9010 or polyester powder coated to the customers colour requirement.
Grilles are available to fit duct sizes from 100mm x 100mm up to maximum 1200mm x 1200mm as a single unit.
Plenum boxes are accessories for use with Grilles and Diffusers. They are designed to equalise the pressure profile within the box and hence provide an even velocity at the face of the Grille or Diffuser without the use of Equalising Grids.