I bought a 3M home furnace filter for $30CDN (Nissan in cabin filter is $55CDN), cut it in 4, taped the open edges back together, and the new one fits better than the stock filter did; no play around the edges.
Plus, it has a charcoal filter for allergens, pollen & spores, as well as odours.
WAYYYYYYYYYYY better than stock for 1/5 the price.
Check it.:xyxthumbs