2 Aeroport - 3 inch PRN Port Kits Increase SPL PRN Port

2 Aeroport - 3 inch PRN Port Kits Increase SPL PRN Port -Non-turbulence at entrance and exit of tube -Noise-free operation -Higher sound pressure level -Decreased distortion -Increased airflow through tube -Much clearer sound -Increases & improves bass Please review pictures carefully for condition and items included. Comes from a smoke free home