Terrawagen makes it easy for you to pick and choose which items you need or want out of their Tidy Trim kit.  This is one of the items that can work by itself.  The Window surround simply slides behind the "B" pillar trim and fastens using self tapping screws. 

The flange allows you to bring your wall panels right to the window for a professional finished look.  Made from ABS plastic, it is easy to trim, cut and sand.  Covering the window in fabric is recommended, but the textured surface stands well on it's own. It can also be painted.

*Because of the sheer size of the box this is shipped in, returns are not available.