Abstract: A double isolated electrically shielded screen room in which all side, ceiling and floor panels thereof are provided with peripheral grooves. A tongue strip matingly engages the grooves in adjacent panels and clamping is completed with bolts. This construction minimizes the number of individual elements required for the screen room and facilitates assembly and disassembly. To reduce the possibility of the wood frame members being split, they may be partially cut through at the base of each groove. Alternatively, the frame members could be fully cut through, resulting in two individual pieces, permitting more freedom in putting the shielding on each panel.

Abstract: A double isolated electrically shielding screen room is characterized in that all of the side, ceiling and floor panels thereof are selectively provided with either male or female configured marginal edges defining tongues and grooves for interconnection of the panels without need for separate shielding strips. Overlapping shielding contacts between connected panels lie in parallel planes and are secured under compression in directions perpendicular to the contacts with great isolation efficiency by outwardly concealed clamping means applied from inside the room assembly, so that floor space around the room is economically conserved. The particular construction minimizes the number of individual elements required for the screen room and facilitates its assembly and disassembly.