TAKE OUT THE GLOVEBOX BY PUSHING OUT THE TWO PINS THAT ACT AS THE HINGES AND THEN EASE IT OUT FROM THE DASH,YOU WILL SEE STRAIGHT IN FRONT OF YOU A GREY PLASTIC PANEL WITH SERATED HOLES RUNNING DOWNWARDS ABOUT 2TO 3 INCH APART.THIS NEEDS TO BE CUT OUT WITH A SHARP KNIFE (BECAREFULL) ONCE THIS IS REMOVED YOU ARE NEARLY THERE YOU WILL SEE THE HEATER BOX STRAIGHT IN FRONT OF YOU REMOVE THE SMALL SCREW AT THE BOTTOM AND SLIDE OUT THE INCH WIDE PANEL (DOWNWARDS) THIS WILL UNVAIL THE POLLEN FILTER THIS THEN SLIDES OUT TOWARDS YOU. EASY EH! THE CAR DOES NOT HAVE TO HAVE AIR CON TO BE FITTED WITH A POLLEN FILTER AS I HAVE GOT ONE AND DONE IT MYSELF AND ALSO WORKED IN A NISSAN DEALER FOR 5 YEARS.
MARK SMITH, February 2008