Center Line Ducted Coleman Mach 1, 3, 10, 15 & Q

Installed two of these in our Holiday Rambler 38N. Very slightly having to trim one. Definitely improved airflow and noise levels.

Just needed a slight modification to fit in my unit

I have seen different types of these and in my opinion it is the best quality and functionality of all of them. It made a great difference in my RV . I would recommend the KoolRV to anyone that wants to help their RV AC unit performed better!