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Perfect Size for Many Projects, Indoors or Outdoors Need to cover a large area" Worried about rusting" This material is an excellent choice for moderate magnetic shielding (permeability ~1000) when cost is the major consideration. Large 24 x 48 x 0.0235 inch format, weighs less than 8 pounds per sheet, and delivers up to 80% magnetic field reduction when size and position are optimized. Magnetic Permeability of ~800. Great for covering a breaker panel, or sliding behind a solar panel inverter or smart meter. Attractive lightly brushed finish is very corrosion resistant, even at the edges. Ships with PVC film on one side to help protect against scratching during fabrication and in-stallation. Can be cut or bent with sheet metal tools, and magnets will stick to it.
SHIELDENE® Corrosion Resistant Magnetic Shield Plate (Cat. #A269) ............. $59.95
Decorative Magnetic Shielding A circuit breaker box (or fuse box) in the bedroom, living room, kitchen, or other living space can be a real problem. Strong magnetic field emissions (depending on how much electric current is flowing) and electric field emissions can make the nearby area hazardous to occupy, especially for long periods. Shielding is certainly possible, but the shield must not hamper quick and easy access to the controls inside the box. NOTE: This is designed for small apartment panles, around 18" x 12" or similar. You may need more material for larger panels. If you are handy, you can use the magnetic shielding materials listed below to make your own hinged shield. If you want an easier solution, here it is. It's a picture (or poster) in a nice frame, with high performance Giron shielding material behind the picture. Just put a nail above the breaker box and hang the shielded picture where you need it. The bigger the shield, the better the shielding. In our tests, a 2-foot section of Giron in a 24x36 inch frame provided 50-70% reduction of magnetic field. If you need a shield larger than what is suggested here (see this application note to determine how large your shield should be), just contact us, we will be happy to assist you. Bookmark this page before you begin so you can find your way back.
Step one:
Step two:
Picture Frame
Obviously, these are just examples. Get something you like.
Another alternative is to mount the Giron directly on the wall and cover it with these attractive interior window shutters. Click images below for more information or to order through Amazon:
  
Affordable window shutters  are available in many sizes. A great way to add a decorative touch over Giron shielding material for small areas.
Be sure to order the quantity of Giron that you need before you click the links above:
GIRON (Cat. #A273) ............................... $48.95 per linear foot
Breakthrough In Magnetic Shielding Flexibility GIRON Magnetic Shielding Metal Film, which does not contain Nickel, is unlike any other magnetic shielding material available on the market today. Suitable for high field strength applications requiring high saturation and good permeability, it is both thin and strong, and unlike Mu-metal™ it is very tolerant to bending or shaping without losing its shielding properties.
Suitable for small shields on magnets, motors, speakers and appliances such as refrigerators, vacuum cleaners etc. Also great for lining car floor or firewall. Perfect for full or partial wall / floor shielding in rooms too! Can be glued, taped, nailed, screwed or riveted into place. Could even be used to make a (heavy weight) vest to shield a person's torso! Works with AC or DC magnetic fields (0-1000 Hz), and will tolerate temperatures from 32° to 140°F. Laminated with a 0.005 inch glass reinforced polypropylene tape which is UV sensitive, cover if installation is exposed to direct sunlight.
25.5 inch wide, 1 mm thick. Weighs 3.5 Kg/m² (about 15 pounds per 10 foot length). Edges are sharp!
GIRON (Cat. #A273) ............................... $48.95 per linear foot
10 inch long and heavy duty. Drop forged carbon steel, straight cutting. Double dipped soft comfort grip. Just right when you need to cut magnetic shielding materials including Giron, MagnetShield , and Magnetic Shielding Foil.
Tin Snips (Cat. # A412) ..... $11.99
Click here for Specifications and Installation Notes
Now achieve excellent and affordable magnetic shielding in difficult situations! Mag- Stop Plates are extra thick high-efficiency magnetic alloy (Mumetal®) plates, specially designed to provide superior shielding for electric circuit boxes, side by side computer users, and any situation where you need a flat shielding material on a wall, floor, or ceiling. Can be mounted with ordinary nails or screws, or sandwiched between the studs and dry-wall. Use zinc chromate primer before painting. In one application, we were able to achieve almost 95% attenuation of a 200 mG field! The 24" wide "stress annealed" plates offer good magnetic shielding and are also well-suited for forming into complicated shapes. The 30" wide "fully hydrogen annealed" plates offer the best shielding available (up to 10 times the shielding effectiveness of stress-annealed alloy) and should not be soldered, welded, or heated in any way. Hydrogen annealed plates have 2 small holes pre-drilled near one end which may be used for mounting. Because of size and weight, additional shipping charges apply.
The amount of shielding that you will achieve depends on many factors, including the size and shape of the shield. When using a flat shield on a wall, floor, or ceiling to shield a source of field that is close to the shield (within 8 inches), plan to cover an area that extends at least to the 2 mG line. Method:
1- Using your gaussmeter, slide along the surface of the wall to locate the hot spot to be shielded.
Make sure to check for additional sources of magnetic field (lights, wiring, appliances and so on), that may be located inside adjacent walls, floor, ceiling or within the same room. Click here for a short instructional video on doing a magnetic field survery for shield design.
Another format of MuMetal®, great for Magnetic Shield Prototyping and for Joining Mag-Stop™ PlatesWhen you need more than one Mag-Stop Plate to cover an area, how do you handle the joints" Joint-Shield is the perfect solution! This is a generous .010" thick, fully hydrogen annealed magnetic shielding alloy with adhesive backing (rated 0 - 200°F) on one side. Simply butt the Mag-Stop plates tightly together, and "tape" over the seam with Joint-Shield high permeabilty alloy. This method offers much less bulk and better appearance than the old overlap technique and provides excellent shielding integrity. Simple to use: just cut to desired length with a heavy scissors, peel the protective backing and press into place! Joint-Shield can also be used by itself as an excellent magnetic shielding material when a 4" width and adhesive backing is desirable (wrap it around wiring and conduit, speaker magnets, even small appliances like shavers and hair dryers!). Joint-Shield can be shaped by hand, without the need for special tools, but watch the sharp edges.
4 inch wide. Specify desired length when ordering.
Ultra-Light Weight, Wide Format, Flexible Magnetic Shielding
Combining high performance nanocrystalline magnetic shielding alloy sandwiched between layers of clear PET to achieve good performance and easy handling. Very light weight and flexible, easily trimmed with scissors this material will provide good high frequency magnetic shielding for moderate to low intensity fields below 1000 kHz. Tolerates bending very well.
FINEMET Full Roll (100 meters) (Cat. #A271-roll) ... $6500.00 (about $19.81 per foot)
High Saturation Magnetic Alloy
First line of defense for shielding strong magnetic fields from magnets, speakers, small transformers and motors. Strong magnetic fields are harder to shield because they tend to "saturate" the shielding material. This 4" wide foil is a hefty .010" thick and has an exceptionally high magnetic saturation of 21400 Gauss and maximum permeability of 4000. Tin plated for excellent corrosion resistance and better conductivity, it can be soldered or painted. MagnetShield typically reduces fields up to a factor of 2 or 3 depending on size/shape of the shield. Can be used in multiple layers, and/or in combination with a higher permeability alloy such as Joint-Shield for higher attenuation. Annealing is not necessary with this material. For increased shielding effectiveness, consider the following strategies:
Reduces Interference with Nearby Objects We get a lot of calls from sailors and pilots who have a speaker installed in tight quarters near sensitive equipment like a compass or other electronics. The strong magnetic field from the speaker magnet can create havoc! Shielding a compass is not a good idea as it also shields the Earth's magnetic field. The Speaker Magnet Shield is designed to attach to the back of the speaker magnet reducing magnetic field emissions by 80-90%. Simple to install. Just place it on the back of the magnet. Magnetic attraction keeps it in place even under moderate vibration. Three layers thick (although the design permits using only one or two layers if desired), corrosion resistant, and only 6.5 ounces. Fits magnets up to 3-1/8 inch diameter. Can also be used to shield other small magnets. Note: The Speaker Magnet Shield can only reduce field strength at the back and sides of the magnet. Because of lack of access, the front of the magnet cannot be shielded. Tools may be required for installation.
Speaker Magnet Shield (Cat. #A932) ............. $9.95
Light Duty Economy Magnetic Shielding For shielding jobs where you don't need a high attenuation, this unique material is just the ticket. Only 0.010 inch thick, PaperSHIELD is flexible and can be easily cut with a scissors and shaped by hand into simple or very complex shapes. High saturation and moderate permeability make this ideal for shielding weak magnets, or stronger magnets with many layers of shielding. This material is particularly suited for achieving precise levels of partial shielding as you can add exactly the right number of layers to achieve the desired result. White paper on one side can be imprinted (by you). Peel and stick adhesive on the other side permits easy and semi-permanent mounting almost anywhere. Magnets will stick to it nicely. Really great for experimenting. 36 inches wide. Made in USA. Bonus application! In addition to shielding magnetic fields, PaperSHIELD is also quite good at shielding radiowaves (cellphone, wifi, etc). And because of the adhesive backing, it can be adhered to almost any (indoor) surface you need.
PaperSHIELD (Cat. #A270) .......................... $18.00/ lin ft
Magnetic Shielding You Can Wear! Attention pacemaker wearers, welders and anyone wanting to shield their upper body from magnetic fields! The Upper Body Shield does exactly that. Composed of individual metal links which give good flexibility and plenty of air circulation. Provides about a measurable ~50% reduction of AC and DC magnetic field!
Upper Body Shield (Cat. #A279) ............. $69.95
"Versatile Shield for Both RF and Magnetic Fields" Homeopathic remedies, credit cards and passports with chips, and electronic equipment can all be compromised by exposure to electromagnetic fields. The EMP Can™ is a great air-tight way to store these items and protect them from outside EMF influences including low grade EMP. Shields both radiofrequency and magnetic fields by 95% or more. All metal construction, nice wide mouth and quick-close latch keep contents secure. In addition, you can put a radiation source (such as a mobile phone or magnet) inside the EMP Can to contain the field. 3.6" wide x 6.5" high
EMP CAN™ (Cat. #A339) ............ $14.95
Breakthrough in Low EMF Wiring!! At last, we are proud to offer wiring which actually reduces EMF emissions to extremely low levels. Patented design incorporates both of these EMF emission suppression features: special internal wire configuration to maximize cancellation of magnetic field emissions: 2 hot, 2 neutral, and one ground wire and shielded wrapping to completely eliminate electric field emissions! The result is a high quality wire with the lowest possible EMF emissions (over 90% reduction compared to standard wire). Replacing existing wire with MµCord is likely to be much less costly, more effective, and probably more convenient than shielding. See How MµCord compares to standard ROMEX® carrying 30 Amps at 120V:
Includes ground wire. Note: MµCord will not compensate for unbalanced current. Make sure you correct wiring errors when you re-wire with MµCord. Not UL listed for in-the-wall wiring applications. MµCord™ flexible "appliance cord style" for re-wiring lights and appliances, making extension cords, etc. 20AWG tinned-copper stranded wire. Rated for 8 Amps, 300 Volts. ¼ inch outer diameter. Black. Specify length in feet
MµCord (Cat. #A223) ........ $1.75 per foot
NEMA 5-15P: 3 prong grounded plug (Cat#A224P) ....... $5.95
Need more room at the end of your cords" This sturdy adapter converts one outlet into three. Uses standard North American 3-prong outlet. Handles up to 15A safely. Color/style may vary.
Need Magnetic Shielding Conduit Just For Wiring? Spira-Shield provides high permeability magnetic shielding and physical protection for any ROMEX® electrical wiring. Made of .010" thick Magnetic Shielding Alloy. Slips over standard wiring to provide that peace of mind when it must be near electromagnetically active sources. Also reduces interference in stereo and telephone lines. Ground it for the added benefit of E-Field shielding.
For clarification: this item protects the cable inside the shield from magnetic fields originating outside the shield.
Thin Spira-Shield (Cat. # A275-T).....................$241.00
Wide Spira-Shield (Cat. # A275-W)...................$291.00
1/2 inch and 1 inch ID also available as a special order. Contact us for details.
Magnetic Shielding Alloy Sample PackAids in Deciding Which Material to Use
With so many choices, it can be difficult to decide which shielding material to choose for a specific job. You may wonder: How stiff is it? How heavy is it? How easy is it to cut? What color is it? And so on.
Magnetic Shielding Alloy Samples (Cat. #MSAS) ...... $25.00
 lessemf@lessemf.com
Mumetal is a registered trademark of Magnetic Shield Corporation.
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Here is how to create your magnetic shield:
GIRON is a woven, laminated material. Cuts neatly with snips or sheet metal tools, and can be used either flat or molded into shapes for best performance.
Oversize Double Duplex (Cat. #A724) .................
Stack multiple layers to improve shielding performance. Maximum permeability: 70,000. Maximum flux density: 1.13T.
Only 0.12 mm thick (5 mil) and 470 mm (18.5") wide. 0.052 lb/ft². Hitachi Part #MS-FR 470-100M-T0. Only available in the Master Roll, please allow 3-5 weeks for delivery.
Made with 10mm diameter, shiny galvanized, 16g round mild steel rings which are butted closed. You can easily move/remove links. For example, if you don't need the head covering, you could move those links to achieve more shoulder or heart coverage. Or you could use removed material to double up the shielding in desired places. Keep it dry as it will rust! You should probably wear a fabric liner under the shield, to minimize direct skin contact. It has some weight to it, just over 6 pounds. One size fits all.
MµCord™ can be used to make extension cords and appliance cords. Simply cut wire to desired length and add a plug to one end, or plug one end and socket on the other. Easy to do with a screwdriver, instructions included. Rated for 15A - 125V
These plugs are suitable for North America. Plugs and sockets for other countries can be used, but you must obtain them locally. Color/style may vary.
The Sample Pack includes 6 samples of our most popular materials:
