NW Aluminum 640 is the slimmest aluminum frame of the NanaWall folding product line. With floor supported panels capable of reaching system heights up to 10’ 2” (3100 mm) and panel width up to 3’ 3” (1000 mm), this folding glass walls offers the possibility of wider opening sizes with the integration of FourFold and SixFold Panel Sets. Depending on the glass type selected, NW Aluminum 640 offers thermal performance values as low as “.24”. All panel sizes and configurations is Florida statewide approved with Product Approval number FL38736.