Sorry for late reply. I just noticed, it fits with my two first version Fogger V4. There are different revisions and the threaded airflow ring doesn't fit. I guess the only options are leave the airflow ring off, grind it down or dremel a bit off from the VTR. I might dremel a bit away to have a bigger channel for the airflow in general, but first I'll have to get it apart. Just got my DNA30 and stuff Still waiting for some 2 color effect paint to give it a little more bling.