inputs.text: great little gadget right - look carefully picture product note 3 things 1 louvers horizontal 2 louvers fixed not adjust 3 position louvers relationship driver let us look three areas closely 1 two support posts back mount go attach top horizontal louver louver must horizontal 2 louvers not fixed weight garmin unit cause mount along garmin hang flacidly downward position cannot see screen face floor 3 mounting bracket swivels left right not therefore position vents high low relationship driver might disappointed ability see screen clearly different light conditions however meet criteria unit loved mine wish someone told \\fixed\\ nonadjustable louver requirehement importance note realized not unit emailed seller cheerfully promptly issued rma refund even not right unit others recommend seller highly