Window wall for shielded enclosures

A window wall for use in a window opening in a shielded enclosure comprising:

• a frame received within said shielded enclosure window opening in electrical conductive engagement with the shielded enclosure;
• said frame including a perimeter support member and a selected number of both horizontal muntins and vertical mullions electrically coupled to said frame perimeter defining a plurality of clear window openings;
• both said horizontal muntins and vertical mullions including a pair of cooperating support members;
• a window unit frame received in each of said clear window openings;
• said window unit frame being supported by and electrically connected to said frame;
• a pair of spaced apart radio frequency (RF) shielding continuous screens spanning each said clear window openings;
• and each of said RF shielding screens being formed of electrically conductive mesh material and being mechanically and electrically connected with said window unit frame;
• and
• a pair of spaced apart, light-transmitting window panes covering said RF shielding screens, said light-transmitting window panes supported by said window unit frame.