I am building room divider screens that are about 6’ tall. There are 3 panels of ¼” X 1 ½’ X 6’ masonite framed with ¾” X 1” pine that has a ¼” X ¾” slot in the ¾” face. I need hinges that will permit the screens to fold in either direction. I have seen these in an interior decorators shop, but have no idea the source of them. Could you tell me the name of this type of hinge? I realize the description is sketchy, but it is the best I can do.