Living Room, Sofa, Chair, Ceiling Lighting, Coffee Tables, Dark Hardwood Floor, and Accent Lighting Flanking each side of a central window in the living and dining space are two massive Series 600 Sliding Glass Doors from Western Window Systems. Such large doors create a strong indoor-outdoor connection for entertaining and enjoying the bay breeze.  Photo 3 of 8 in Walls of Glass Transform a Hillside 1956 Duplex in California