Newest Louvered roof Pergola Kits Motorized  Louver Exterior Shutter Louvers Shutter WindowInnovative ShutterSlide and swing the all panes atfar end to optimize spaceAdjustable louverWith the adjustable louver, 90%weatherproof and will keep out 95% of the lightWonderful RollersUse ball bearing wheels andslide smoothlySecurity side lockPushes and compresses allthe panels togetherEmbedded bottom trackou can choose the bottom trackthat can be embedded in the floor, placing the panes base at ground level