Will these fit over my existing handles without removing anything?

Yes. These mount at factory attachment points — no handle removal needed. Test-fit before final installation to confirm your handle design matches the cover opening.

Do I need to prep or paint these before installing?

That depends on your finish preference. They ship ready to install as-is. If you want color-matched covers, paint before mounting to avoid masking around the handle area afterward.

What fastens these to the doors?

Mounting method and hardware are not specified — confirm attachment style during test-fit so you can source the right fasteners for your installation.