Cabin Filter (FRAM CF10559) $15
The cabin filter is located behind the glove box. Remove the connector on the right side of the glove box. Squeeze in the sides of the glove box so the glove box will hang down, giving you access to the cabin filter.
Remove the old filter and install the new filter. Press the glove box back into place. Reattach the connector on the right side of the glove box.
Here is a picture of the old cabin air filter!