Abstract: An industrial noise abatement enclosure having opposed walls includes an open framework and a series of elongated acoustical panels arranged side by side and removably mounted upon the top and sides of the framework. The framework has corner posts with right angularly related connectors at their top and bottom. A plurality of pairs of vertically spaced top and bottom tubes have their ends snugly telescoped over the connectors. Coplanar spaced upturned and downturned channels are respectively mounted upon the bottom and top tubes. The panels at their ends are loosely interlocked with the channels and extend between the corner posts. The roof panels span and rest upon the top tubes. The panels are individually liftable within the channels and removable therefrom for easy access to the interior of the enclosure. Each panel is in the form of a box with a perforated inner wall. The panel faces have side flanges which are interconnected by side strips.