One of the most noticeable and iconic elements you can add to your Mustang’s body are rear window louvers. Louvers are slats that block some light from entering a window.
Mustang rear window louvers provide shade from the sun and some cooling benefits. However, the biggest reason for adding rear window louvers is to enhance your ride’s style. They’ve been popular on pony cars, muscle cars, and sports coupes since the iconic 1969 Mustang Mach 1.
Rear louvers only lessen rear visibility a little, but it’s still easy to see through them. They're also legal in all states.