What's the maximum practical width for a kitchen cabinet door? Is there a standard, or a rule of thumb, as to how to determine whether an opening in a kitchen cabinet requires one door or two doors. In my case I'm laying out a cabinet run that would have, 3 - 25" wide base cabinets, with face frames, leaving a 21" wide opening. Is a 21" wide door too much to swing, or are double doors a better idea. The interiors of the cabinets will have slide out shelves. I also have a 24" opening on a wall cabinet, above the dishwasher, same question, is a 24" wide door too much? How do you guys approach this design problem? Thanks.