SUMMARY OF SHIELDING SYSTEMS   WELDED STEEL ENCLOSURE MODULAR PAN ROOM COPPER SHEET SYSTEM 285 COPPER COATING SYSTEM

CONSTRUCTION Shielding Steel min. 28 gauge on structural frame or attached to existing walls.   Minimum 24 gauge galvanized steel pans.     Copper sheets 3 to 12oz     Component system (water-based copper paint, fire rated doors, vents, laminated windows, power & data filters, copper tape).

JOINING METHODS Welded or brazed.     Bolted through   RF gasketing.     Soldered, taped or stapled.     Copper paint on wall board, wood and concrete. Copper taped joints.

TYPICAL ATTENUATION 1. Magnetic (H-Field) 80dB @ 14 kHz 110dB @ 200kHz   60dB @ 14 kHz 110dB @ 200kHz     90dB @ 200MHz                 _             2. Electric (E-Field) 120dB (20kHz to 50MHz)   120dB (200kHz to 50MHz)     100dB   (10MHz to 50MHz)       Minimum +50dB (10MHz to 1GHz) 3. Plane Wave 110dB (50MHz to 10GHz)   100dB (50MHz to 10GHz)     100dB   (10MHz to 50MHz)       Minimum +50dB (10MHz to 50MHz) 4. Microwave 100dB (1GHz to 94GHz)             _                           _                            _

FEATURES Highest attenuation.       Highest attenuation, lightweight, easy to assemble.     Non-ferrous materials, quick installation.     Easy to install by building trades. Economical reflective shielding for new and exisiting construction.

INSTALLATION COST    HIGHEST       MODERATE          LOW                 LOWEST

APPLICATIONS 60Hz magnetic field shielding, for electrical closets, power substations, UPS systems. Highest possible security projects, research and QC, testing facilities and MRI rooms.   High security areas, government and commercial communication and data processing centers.     MRI & EEG rooms, government secure installations, conference rooms or rooms with require architectural finishing.     Data processing centers, hospital audiological/neuro- psychiatric rooms, radio, TV recording studios, manufacturing facilities for electronic equipment.