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In the market for a new one? If your ceiling is a standard height (8 to 10 feet), look for a style that's 45 to 54 inches from the floor to the top. (This applies to rectangular headboards; arched versions can be taller in the middle.) You want enough height to be able to lean back, but there should be no more than one foot of headboard above the tallest pillow; otherwise any art will be pushed too high. An upholstered version adds a nice layer of texture and is the most comfortable type for sitting up in bed.