the track channel through the top surface of track 12 at spaced intervals along track 12 as seen in fig4 access holes 151 at the track inner surface 153 allow the fasteners to be placed within the track channel next each driving apparatus 50 may be adjusted upwardly or downwardly so that they rest against the sill 32 or sill plate 150 the chain 40 and cables 42 are then connected with the turnbuckle fasteners 44 as described above and the tension adjusted the spacers are removed and the rotator assemblies 54 attached to covering 10 the hub 140 is centrally placed between the ends 22 of track 12 and fastened to the sill 32 or sill plate 150 shade members 16 are set onto the sill or sill substitute and attached to the carriage 46 with the clip member 74 for easy cleaning the shade members 16 may be detached from clips 74 and lifted away from the window likewise the hub 140 may be lifted off in operation the rotator device is activated for example pull cords 56 are pulled separately to raise or lower the corresponding shade member 16 each shade member 16 may be closed partially at any distance along the track 12 although the invention has been herein shown and described in what is perceived to be the most practical and preferred embodiments it is to be understood that the invention is not intended to be limited to the specific embodiments set forth above for example one shade member may be used instead of.