You mentioned needing a vent cover but asked about the E-Z lift vent itself, the Ventline E-Z Lift Ventadome Trailer Roof Vent - Manual Lift - 14-1/4" x 14-1/4" - White # V3092-601-00, so it sounds like you need the actual vent. And yes, that vent will work for you so long as you have the standard 14" x 14" or 14-1/4" x 14-1/4" vent opening on your motorhome.
I recommend taking a quick measurement to see what the opening size is just to verify but it should be that size so you can use... view full answer...