SHIELDENE® CORROSION RESISTANT MAGNETIC SHIELD PLATE
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 For each parcel, a crate charge of $20 will be added. We can put 1-10 plates in a parcel. Ships by UPS as oversize.
Circuit Breaker Shield
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.
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, just contact us, we will be happy to assist you.
Obviously, these are just examples. Get something you like.
Get a nice picture to put in the frame. Here is a nice one, but you can use any that you like.
Put the picture in the frame. Insert cardboard behind the picture. Insert Giron behind the cardboard (careful as you handle it, the edges are sharp!). Use duct tape to hold the Giron in place if needed. Position the Giron so it will be centered over the magnetic “hotspot” on the wall. If you have room, insert another layer of cardboard behind the Giron. Now hang your Picture! Final product weighs about 9 pounds, depending on the frame you select.
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) ............................... $44.95 per linear foot
Our customers are telling us:
"I just wanted to tell you the terrific results I got from using the Giron on the back of a dry erase board to cover the 2 breaker boxes in my daughter's apartment. In this small narrow kitchen, ( approx. 65 sq. ft.), the readings were originally 15 - 30 mG throughout. After hanging the board, the readings were 2 mG throughout. Quite the reduction! And, in the two bathrooms that are situated behind the opposite wall from the breakers, the readings went from 5 - 15 mG, to 2 - 2.5 mG. I didn't expect this shield's effect to reach so far, considering I had limited space to work with. Thank you for your help."
N.L.; New York NY
Breakthrough In Magnetic Shielding Flexibility
GIRON Magnetic Shielding 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.
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.
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.
Initial permeability: 500
Relative permeability: 7000
Saturation induction: 2,0 T
Curie Temp.: 740°C (1364°F)
Weight is approx 1 lb per square foot
Thickness: 0.9 mm (0.034 inch)
25.5 inch wide, 1 mm thick. Weighs 3.5 Kg/m˛ (about 15 pounds per 10 foot length). Edges are sharp!
GIRON (Cat. #A273) ............................... $44.95 per linear foot GIRON full roll (81 feet) (Cat. #A273-roll) ... $2912.76 per roll (Save 20%)
"Great for Cutting Magnetic Shielding Materials"
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
SHIELDED SWITCH PLATES AND OUTLET COVERS
Reduce Emissions at the Source
Outlets and switches can emit strong electric and magnetic fields. Conventional shielding with mumetal is possible, but tricky because it’s hard to make it look good, plus you need access to be able to use the switch/outlet. Now you can simply replace your Switch Plate or Outlet Cover with these custom shielded ones. Magnetic field reduction is 30 to 60% up close to the surface, depending on wire configuration. For severe cases, you can stack a double layer to achieve even better reduction. Electric field reduction is typically 75%. Attractive polished chrome finish with a nice perimeter detail. Solid metal (shielding alloy) and durable. Includes mounting screw(s). Two sizes: oversize (3˝x5˝”) and super jumbo (5˝x7˝”) for maximum protection. Make sure you have enough room between outlet and nearby moldings for these larger than standard covers. Very economical!
Super Jumbo (Cat. #A723) ........................ $29.95 each Super Jumbo, 10 pack (Cat. #A723-10) ........ $250.00
Oversize Double Duplex (Cat. #A724) ................. ...................................... $11.95 each
MAGNETIC SHIELDING FOIL
"The Best Material Available for Shielding DC, ELF & VLF Magnetic Fields"
Used for years in industry to shield delicate electronic components from EMFs, this 80% Nickel alloy magnetic shielding foil is now available at affordable prices for home and office use. The thinner (0.004" thick) material is easy to trim with scissors and shape by hand. Thicker material offers better shielding performance but requires snips to cut. Can be formed into magnetic barriers on cellular phones, microwave ovens, doorbell transformers, VDTs, buried wiring, and more. With snug fitting shapes, get as much as 75% attenuation of the magnetic field with one thickness. Use multiple layers for even greater reduction. Foil is available in two thicknesses and can be ordered in any length. (We recommend the use of a gaussmeter to determine the proper shape and positioning of the magnetic shield, and to confirm that the fields have been adequately reduced.) 12 or 15 inches wideCAUTION: Foil has sharp edges!
Magnetic Shielding Foil: 12" wide, 0.004" thick (Cat. # A276-12) ......... $20.95/linear ft
Magnetic Shielding Foil: 15" wide, 0.010" thick (Cat. # A276-10) ..... $39.95/linear ft
"Great for Cutting Magnetic Shielding Materials"
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.
Because we offer so many different materials, of different widths, the easiest way to order rolled goods is by specifying how long the piece of material will be. We describe the length of the material purchased in linear feet. So, for example, if you order 22 linear feet of a material, you will get a piece that is 22 feet long x the width of the material. The width of each material is listed near the end of the product description.
Flat surface magnetic shielding for large or small areas
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.
Application Note for Joining Plates:
There are two effective ways to achieve shielding continuity between multiple plates:
1] overlap 2" at the joints, ensuring good metal-to-metal contact
2] butt joints tightly and cover over the joints with Joint Shield (see diagram at right)
We can pre-cut plates into 2 or more pieces for you.
Note that these plates are 10 feet long and ship by truck. Online shipping estimator will not be correct. Contact us if you have questions about ship costs.
Application Note: How Much Area Do I need to Cover?
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.
1- Using your gaussmeter, slide along the surface of the wall to locate the hot spot to be shielded.
2- Now slide the gaussmeter to the right, to the left, up, and down to identify how far you must shield to get to the 2 mG line.
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.
While the special alloys in Magnetic Shielding Foil, Mag-Stop Plates, Joint Shield, and Metglas, exhibit high magnetic permeability, there are many factors which affect the amount of magnetic shielding you will achieve by using these materials. The list of such factors includes: size and shape of the source of the magnetic field, size and shape of the shielded area, seams in the shielding material, frequency of the magnetic field, distance from shield to source, orientation of shield to the source, thickness and heat treatment of shielding material, etc.
Because we have no control over many of these factors, we cannot and do not guarantee any specific shielding performance for a specific application of these materials. Also, note that foils, ribbons and plates, once cut by us to your specifications, are not refundable.
Here are some basic guidelines for shield design on a circuit box to get you started:
1] Naturally, you must first make measurements of the magnetic fields, which are present. Remember to make measurements under various conditions, as the readings will change according to how much electric current is flowing at the time of the reading. Also, find out if there are other sources, such as wiring leading to the circuit box, nearby fluorescent lights, etc.
2] Determine how much attenuation (reduction) you want. This will influence the choice for thickness of the Mag-Stop Plate shield, or the number of layers used. Most would recommend that you achieve readings of 2.5 mG or less in areas where people will be spending a lot of time.
3] In general, you will extend the shield at least 2 feet beyond the size of the circuit box (or other fairly concentrated source), in all directions. The distance from the shield to the box will be a factor.
4] Remember that you will end up concentrating the field at the edges of the shield. In other words, the field will be stronger at the edge of the shield as compared to having no shield at all. So think about positioning the edges away from where the people are likely to be.
5] Also remember that you will achieve the greatest % reduction up close to the center of the shield (where the field is strongest anyway). As you back away from the shield, the % reduction decreases.
6] Finally, for large shields, one must take saturation into account. This occurs when the Earth's magnetic field (about 400 mG) interacts with a large shield, reducing its effectiveness, unless special "high saturation" (MagnetShield) shielding alloys are incorporated into the design.
In the end, some experimenting is often necessary to ensure proper shield thickness and placement.
If you are still not sure how to use these materials, you may call us for suggestions or we may even be able to locate the name of an experienced shielding designer/installer in your area who can assist in designing your shield.
Another format of MuMetal®, great for Magnetic Shield Prototyping and for Joining Mag-Stop Plates
When 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. Joint Shield (Cat. #A277) .................................. $39.95/linear foot Joint Shield [100 ft roll] (Cat. #A277-roll) ...................... $3595.50
FINEMET® Wide Format Film
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.
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/ft˛. Hitachi Part #MS-FR 470-100M-T0
Specify desired length when ordering. May have splices.
FINEMET (Cat. #A271) ...................... $22.28 per lin foot
FINEMET Full Roll (100 meters) (Cat. #A271-roll) … $5430.00 (about $16.70 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:
Good: Layer(s) MagnetShield
Better: One or more layers of MagnetShield (closest to the source of field), followed by one or more layers of a high permeability material such as Joint-Shield or MagStop Plate.
- The magnets will be attracted to the shield (this is true of ALL magnetic shielding alloys). If you want to shield 2 adjacent magnets from eachother, each magnet should have its own shield.
- The size, shape, and position of the shield all matter in terms of shield performance. For example, larger shields are better than small shields. Closer to the magnet is better than farther from the magnet. And parallel to the magnetic field lines is better than perpendicular to them.
- You will likely need more than one layer of shielding material, depending on the strength of your magnets. More layers = more attenuation.
Our customers are telling us:
"Just wanted to thank you for your advise and product. The magnetic shield was wrapped around the windlass motor about 4 times and with a few tweeks, it totally negated any magnetic influence on the compass. I'm very pleased with the results!"
R.M.; Yorktown VA
"I have a panel volt meter installed next to a Variac. The magnetic field from the Variac was affecting the accuracy of the volt meter. After the MagnetShield was wrapped around volt meter and held in place by a 2" hose clamp, the meter is totally unaffected by the Variac. Thank you for making available small amounts of material for buyers. Most companies don't want to deal with such small amounts."
4 inch wide Ribbon: MagnetShield (Cat. #A274) ........................... $4.50/lin ft MagnetShield [250 ft roll] (Cat. #A274-roll) ..... $844.00
Also available in larger dimensions: MagnetShield Plate 36" x 15" x .015" (Cat. #A274-15) ........... $39.00
MagnetShield Plate 36" x 120" x .015" (Cat. #A274-36) ....... $259.00*
* Note that these plates are 10 feet long and ship by truck. Online shipping estimator will not be correct. Contact us if you have questions about ship costs.
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.
PaperSHIELD (Cat. #A270) …....................… $16.99/ lin ft PaperSHIELD 82 ft roll (Cat. #A270-roll) …..….. $984.00
UPPER BODY SHIELD
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!
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.
Upper Body Shield (Cat. #A279) ............. $69.95
Unique Shape for Unique Shielding Applications
Do you have an application requiring Mumetal® in un-insulated wire format? We have it in two different diameters! Stress annealed Mumetal® alloy. Wind it, weave it, braid it. Create toroids, coils, chains or simply experiment with its unique properties! Be the first to create a truly magnetic shielded garment! Spool size varies between 1-2 pounds. Click here for Specs on MuMetal® Wire
.005" wire (= 36 gauge = 0.13mm diameter) yields approximately 13400 ft per pound
.025" wire (= 22 gauge = 0.64mm diameter) yields approximately 530 ft per pound
If you require round bar stock for your project, we have it! Material is not annealed should be hydrogen annealed after working for maximum performance. There is a $200 minimum order. Choose from several diameters and specify your length in inches.
Cutting charge may apply.
Price per inch
"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!! Exclusively from The EMF Safety SuperStore!
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:
Standard ROMEX® Wire
Electric Field (V/m)
Magnetic Field (mG)
Electric Field (V/m)
Magnetic Field (mG)
7.68 (92% reduction)
0.96 (96% reduction)
0.12 (98% reduction)
0.014 (99+% reduction)
0.0019 (99+% reduction)
0.00096 (99+% reduction)
0.00012 (99+% reduction)
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. Ľ inch outer diameter. Black. Specify length in feet
MµCord (Cat. #A223) …..... $1.75 per foot
Make Your Own Shielded Extension Cord or Appliance Cord
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.
NEMA 5-15P: 3 prong grounded plug (Cat#A224P) ....... $5.95 NEMA 5-15R: 3 prong grounded socket (Cat#A224R) ... $5.95
3 Outlet Socket Adapter
More Outlet Space
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.
3 Outlet Socket Adapter (Cat. #A804) .............. $2.95
SPIRA-SHIELD® FLEXIBLE CONDUIT
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.
Shielding performance depends on many factors, including field strength and tube diameter.
Here are some examples based on DC field, perpendicular to the THIN tube:
Field outside of tube
Field inside tube
less than 0.2 mG
For clarification: this item protects the cable inside the shield from magnetic fields originating outside the shield.
Thin is 3/8" ID and 1/2" OD. Wide is 3/4" ID and 7/8" OD. Priced per 10 foot length.
1/2 inch and 1 inch ID also available as a special order. Contact us for details.
Magnetic Shielding Alloy Sample Pack
Aids 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.
The Sample Pack includes 6 samples of our most popular materials:
.004” Magnetic Shielding Foil
The samples are big enough (typically about 3*5 inches) to get an understanding of the material characteristics, but probably too small to do a shielding test (unless you are using a small magnet at the test source). Also included are specification sheets and application instructions. Best of all, with each sample set you get a $25 coupon good towards the purchase of your desired magnetic shielding materials.
Magnetic Shielding Alloy Samples (Cat. #MSAS) ...... $25.00
These additional items can be purchased directly from other websites. Click links below:
Magnetic Field Warning Sign
Bold colored sign leaves no doubt about the danger present. Generous 10x14 inches.