A molding for drywall panels or the like has a channel to provide a reveal. To provide selected finish or color, a trim structure is provided that likewise has a channel configuration. The side walls of the trim structure and the side walls of the molding provide a sawtooth and rib structure for snap connection. The ends of the trim channel sides provide laterally outwardly extending lips to overly the end edges of the molding. The trim conceals all plaster splashings, obviating cleaning, provides selected color or finish. The desirable reveal characateristic is retained by virtue of the fact that the trim structure itself is a channel.
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