Wall Mirrors 30", 31": This is a good size for a single vanity or dresser. This size makes an impressive floor mirror to lean casually against a wall if 64'' or taller. A mirror this wide can also make an impression in the foyer or entry area. We have a full rage of stunning mirrors this size in ovals, rectangular, and unique curved styles. Cheval mirrors are in this size range and are not only functional but charming in a child's room or super stylish in the master bedroom.