295mm x 295mm overall face size (150mm x 150mm neck size)
2-Way Diffuser - Corner Split Blade Design -
370mm X 370mm overall face size (225mm x 225mm neck size)
445mm X 445mm overall face size (300mm x 300mm neck size)
529mm X 529mm overall face size (375mm x 375mm neck size)
T-Bar Tile Replacement 595mm X 595mm overall face size (450mm x 450mm neck size)