Consultation of Ford Focus filter 2005

Hello, it turns out that I do not find where the pollen filter is to be able to replace it, it is a Ford Focus Trend 1.6 TDCI of the year 2005, observing from the outside with the hood raised under the clean, it only has a grid, but the filter does not appear and I do not locate it under the co -pilot glove compartment, you could help me to see if I can replace it, it cannot be very complicated.
Thank you so much...