I am sure we do but I do not have any way of knowing what size cutout your Fleetwood Southwind RV has so you'll need to take a measurement. The Dometic RV Refrigerator Roof Vent Cap and Base item # DMC97FR, you were looking at, is designed to fit a 23-3/4" long x 6-3/4" wide cutout hole. We also offer the Dometic item # DMC37FR which fits a 23-3/8" long x 6-1/2" wide cutout hole.
If these don't match up feel free to email me directly or comment below what size cutout your RV has so I... view full answer...