BlocSilver® Dome EMF Bed Canopy
Published shielding: 36 dB of shielding at 40 GHz
$1,649.99
Free Standard shipping over $100
Free Express shipping over $250
A dome-shaped EMF canopy in BlocSilver® shielding fabric, hung from a single ceiling hook. The door closes with two ties.
- 36 dB of shielding at 40 GHz, with around 45 to 50 dB at WiFi and cell frequencies
- One size fits all beds up to US King, with a 3.28 ft roof diameter
- Hangs from 1 ceiling hook (needs a hole in the ceiling, so not ideal for renters)
Sleeping above ground level? Add an EMF/RF bed mat for under-bed protection.
In stock
- 30-day returns
- Free US shipping over $100
- Shielding specialists since 2004
- Free advice before you buy
Product details
A Dome Canopy That Fits Every Bed Up to US King
The BlocSilver® Dome EMF Bed Canopy wraps your bed in a dome of BlocSilver® shielding fabric, reducing the RF signals from WiFi routers, cell towers, smart meters and 5G that reach you while you sleep. It is made from the same fabric as our other canopies, in a dome design that hangs from a single point in your ceiling. One size fits every bed up to US King, so there is no size to choose. Compare it with the rest of our EMF bed canopies.
Door With Two Ties, Roof Secured by a Hoop
The dome has a 3.28 ft roof diameter. A door gives you access to the bed and closes with two ties, and a hoop secures the roof in place.
Shielding Performance
BlocSilver® provides 36 dB of shielding at 40 GHz, which covers the high-frequency millimeter wave range used by 5G. At lower frequencies, including the WiFi and cell phone bands, attenuation is higher, at around 45 to 50 dB. Decibels are a logarithmic scale: every 10 dB is a tenfold reduction in signal power, so 36 dB means more than 99.9% of the signal power at that frequency is blocked. See the Specifications tab for the full attenuation table.
Installation: One Hook in the Ceiling
The dome hangs from a single screw-fix hook. Because the hook is fixed into the ceiling, you need to make a hole, so it is not ideal for renters or anyone who does not want to make holes in their ceiling. If that rules it out, our Four Poster canopy comes with a freestanding frame and needs no hooks, screws or fixings into your floor or ceiling. If you prefer a box-shaped enclosure, see our Suspended canopy, which hangs from eight ceiling hooks. All use the same BlocSilver® fabric.
Grounding
Like our other canopies, this canopy needs to be grounded. An EMF Canopy Grounding Kit is included free of charge.
Do You Need a Bed Mat?
It depends on which floor you sleep on. BlocSilver® is conductive, so on the ground floor the canopy on its own creates a Faraday cage around your bed. If you sleep above ground level, signals can also reach you from below, so add an EMF/RF bed mat under your mattress to complete the enclosure.
Care and Washing
BlocSilver® can last up to 40 washes while still maintaining its shielding properties, if it is washed according to these instructions. Washing will eventually degrade any fabric containing silver fibers and reduce its shielding performance, so wash only when you need to. The fabric is encased in an antioxidant coating and can be spot cleaned or wiped down with a damp rag.
- Use Texcare or a pH neutral detergent to help protect the silver.
- Gently hand wash with cooled boiled water or mineral water, especially in high chlorine areas. You can also machine wash on a gentle cycle with cool water.
- Hang dry indoors only, and keep the fabric away from direct sunlight to prevent silver oxidation.
- Avoid use in high-salt or sulfide air conditions.
- Do not use oils, bleach or any chlorine-based detergent, and do not iron or dry-clean.
Test your tap water first. Poor water quality damages the silver in the fabric. Sulfur, high fluoride and low pH react strongly with silver and can destroy conductivity and shielding performance. Before washing, test your water on a small fabric swatch:
- Soak a small swatch in tap water for 1 hour.
- Look for a color change in the water or swatch, especially blackening.
- Air-dry the swatch and check its conductivity by touching an ohm meter to two points on the fabric.
- If the color changes or conductivity is lost, do not use tap water to wash or rinse the fabric. Use distilled, deionized or reverse osmosis water instead.
Watch our instructional video and washability test.
About Silver Fabric and Discoloration
Silver products discolor over time, which is normal, and can be stained from the factory. If you cannot accept discoloration, please consider a Swiss Shield® canopy instead.
Made in the UK
This canopy is made in the UK.
Warranty
The BlocSilver® fabric in this canopy carries a two-year warranty against manufacturing defects.
- Bed Size
- Crib/Cot, Twin, Twin XL, Full, Full XL, Queen, California King, King
- SKU
- EMF5GDOME
| Specification | Details |
|---|---|
| Fabric | BlocSilver® EMF shielding fabric |
| Design | Dome canopy hung from a single ceiling hook |
| Roof diameter | 3.28 ft |
| Fits | All bed sizes up to US King (one size) |
| Door | Closes with two ties |
| Installation | 1 screw-fix hook fixed into the ceiling (requires a hole); hoop secures the roof |
| 5G shielding | 36 dB at 40 GHz |
| WiFi and cell shielding | Around 45 to 50 dB (2.45 GHz, 5 GHz and 915 MHz) |
| Tested range | 30 MHz to 40 GHz |
| Grounding | Required; EMF Canopy Grounding Kit included free of charge |
| Under-bed protection | Not needed on the ground floor; EMF/RF bed mat recommended above ground level |
| Care | Gentle hand wash or gentle machine cycle in cool water; up to 40 washes; hang dry indoors |
| Origin | Made in the UK |
| Warranty | 2 years against manufacturing defects (fabric) |
Shielding Attenuation by Frequency
| Frequency | Attenuation |
|---|---|
| 30 MHz | ~50 dB |
| 100 MHz | ~49 dB |
| 300 MHz | ~51 dB |
| 915 MHz | ~50 dB |
| 1.5 GHz | ~48 dB |
| 2.45 GHz | ~46 dB |
| 5 GHz | ~45 dB |
| 8 GHz | ~40 dB |
| 10 GHz | ~38 dB |
| 20 GHz | ~35 dB |
| 30 GHz | ~35 dB |
| 40 GHz | 36 dB |
30 MHz to 1.5 GHz measured per ASTM D4935-18 / GB/T 30142-2013. 2.45 GHz to 40 GHz reflect internal measurements.
It uses the same BlocSilver® fabric, but in a dome design that fits every bed up to US King and hangs from a single ceiling hook. Our Suspended canopy is a box shape hung from eight hooks, and our Four Poster canopies come with a freestanding frame and need no fixings into your ceiling.
It hangs from one screw-fix hook fixed into the ceiling above your bed. A hoop secures the roof in place.
Yes. The hook is fixed into the ceiling, which means making a hole, so the dome is not ideal for renters. If you rent, our Four Poster canopy is a better fit, because its freestanding frame needs no fixings into your floor or ceiling.
One size fits all beds up to US King, so there is no size to choose when you order.
The roof diameter is 3.28 feet.
The dome has a door that closes with two ties. Untie it to get in and out, and tie it shut while you sleep.
Yes. Like our other canopies, this canopy needs to be grounded. An EMF Canopy Grounding Kit is included free of charge.
Yes, with care. BlocSilver® can last up to 40 washes while maintaining its shielding if you follow the care instructions, but washing will gradually reduce shielding performance. Hand wash gently with a pH neutral detergent and cooled boiled or mineral water, or machine wash on a gentle cycle in cool water, and hang dry indoors away from direct sunlight. Test your tap water on a fabric swatch first, because some tap water can damage the silver. Never use bleach, chlorine-based detergent or oils, and do not iron or dry-clean. See the full instructions in the description, or watch our washability test video.
36 dB at 40 GHz, and around 45 to 50 dB at common WiFi and cell frequencies. Every 10 dB is a tenfold reduction in signal power, so these figures represent a very large reduction in the RF reaching your bed.
Yes. Attenuation is around 46 dB at 2.45 GHz and 45 dB at 5 GHz (the WiFi bands), around 50 dB at 915 MHz (a common cell and smart meter band), and 35 to 36 dB across the 20 to 40 GHz millimeter wave range used by high-band 5G.
Only if you sleep above ground level. On the ground floor, the canopy on its own creates a Faraday cage around your bed. If you sleep upstairs or anywhere above ground level, add an EMF/RF bed mat under your mattress to protect from below.
Use an RF meter. Take a reading at bed height outside the canopy, then take a reading at the same spot inside with the canopy fully closed. The difference shows how much signal the canopy is blocking.
Yes, silver products discolor over time, which is normal, and can be stained from the factory. If you cannot accept discoloration, we recommend a Swiss Shield® canopy.
If you are not completely satisfied, just let us know. As long as the canopy is undamaged, we will happily accept a return. See our returns policy for details.
It is made in the UK.
Yes. The BlocSilver® fabric has a two-year warranty against manufacturing defects.
Yes. If you are unsure which canopy or size is right for you, contact us for free advice before you buy.
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