Basically you want to hang a tv upside down on a door that will act as a hider for the lcd when not in use and when you plan you use it, you will then flip the door up showing the tv. Your question is if this will hurt the tv. The answer is no. They can even be displayed on its side if you wish. the only thing you need to worry about is weatherization of the compartment from cold and water. LCD tv screens will shatter if the weather is too cold. Store the TV in a proper place durign winter/cold months.