Zwischen Küche und Essz. ODER zwischen Essz.u.Wohnz. ??

like the pocket doors- glass doors maybe a good idea from the great room to the 4 season porch to let the most light in. For even more light maybe fixed glass doors/windows on either side.

Primed 4 Panel Shaker Glazed | Internal Stile & Rail Doors | Doors & Joinery | Howdens Joinery

This Primed 4 Panel Shaker glazed door has four clear glass panes which add interest and light to modern interiors. Ready for painting, this door also comes with toughened glass.