The photo on the left shows you the left and right screens, as they will be installed. Notice that the longer cut is at the bottom inside.

The photo on the right is a left side (passenger) air duct. The screen is shaped to fit inside and rest against the inner lip.

To install you first put up the headlights and remove the plastic housing by unscrewing the 3 screws. (Bottom left)

Next push in the air duct and move it down half way. (Bottom right)

Insert the screen from the top through the headlight opening (bottom left) and with the help of a small screw driver or nail adjust it in to place.