The cabin air filter is located behind the glovebox. To access it, the glovebox needs to be removed.

After opening, 2 supports on the back of the glovebox prevent the glovebox from falling on the floor.

With your hands, push the left support to the right, making sure the rubber band doesn't catch on the frame.

If the left support can move freely, pull the glovebox towards you and to the left, to also free the right support.

Pull the glovebox towards you to pull the bottom hinges free.