I have tried 2 different windscreens and they both fit without opening the windscreen " vent" built into the cover, but neither screen is really tall: 12" Slipsteam and 9" Cee Bailey. It looks to me as if the "vent" will open to accomodate almost any size screen. Mine also has side "vents" that open to allow access to the bags without cover removal. Very nice screen functionally, but not as sexy as the tight fitting custom covers.