A modular EMF/RF shielded enclosure having interconnected walls, floor and ceiling panel members such that passage of EMF/RF form or into the enclosure is blocked or attenuated. Quick-connect, quick-release compressive connector members composed of electrically conductive material are used to join adjacent panel members, such that the connector members carry the common ground between adjacent panels and a continuous shielding envelope in the nature of a Faraday cage is formed.