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Shielded Rooms by Holland Shielding

EMI/RFI, EMP and EMSEC protection for rooms, equipment and critical environments
Faraday cages and shielded rooms reduce electromagnetic interference and unwanted signals entering or leaving a controlled environment. They are used for EMC testing, secure communication, research, defence, critical infrastructure and other applications where reliable electromagnetic shielding is required.
Holland Shielding Systems B.V. designs, manufactures, installs and verifies prefabricated, modular and custom-built shielding solutions. From engineering to final acceptance testing, our specialists support every stage of your project.
Complete shielding solutions
Complete Faraday cages, shielded rooms and shielding enclosures for technical and industrial applications.
Modular construction
Standard, prefabricated and custom-built shielding systems that can be adapted to your project requirements.
Engineering and installation
Engineering, manufacturing, installation and shielding verification by experienced EMC specialists.
When is a Faraday cage or shielded room required?
A shielded environment can be used when sensitive equipment, confidential information, reliable measurements or critical systems require protection against electromagnetic interference.
Protect sensitive equipment
Reduce external electromagnetic interference that could affect electronics, measurements and communication systems.
Control unwanted emissions
Help reduce electromagnetic emissions leaving the shielded room and affecting nearby equipment or environments.
Create a controlled environment
Create a stable electromagnetic environment for testing, research, secure communication and technical work.
Our Faraday cage and shielded room solutions
The right shielding solution depends on the frequency range, required attenuation, dimensions, access points, ventilation, cable entries and installation environment.
Complete shielded rooms
Prefabricated Faraday cages, EMI-shielded chambers, TEMPEST rooms and custom shielding constructions.
Flexible shielding solutions
Faraday tents and temporary shielded environments for mobile testing, measurements and short-term projects.
EMI / RFI shielded boxes
Mobile Faraday cages for transporting equipment where wireless data communication needs to be reduced or blocked.
Specialized shielding
Magnetic shielding, architectural shielding, anechoic chambers, TEMPEST-related environments and welded EMP constructions for demanding applications.
Typical shielded room project process
Design, production, installation and verification are coordinated as one complete shielding project.
1. Define
Review the application, dimensions, frequency range, required attenuation and installation environment.
2. Engineer
Design the room, access points, filters, ventilation and conductive connections.
3. Produce and install
Manufacture, prepare and install the shielding components according to the agreed design.
4. Verify
Measure the completed room using the agreed test method, frequency range and acceptance criteria.
Choose the right shielded room construction
The suitable construction depends on the available space, installation method, frequency range, required attenuation and future modification requirements.
Prefabricated and modular Faraday cages
Conductive panels are mechanically and electrically connected to create a continuous shielded enclosure.
- Suitable for new and existing buildings
- Available in standard and custom dimensions
- Easier transport, installation and future modification
- Can include doors, windows, filters and ventilation
Custom-built shielded rooms
A project-specific construction follows the shape of an existing room, building or technical installation.
- Suitable for complex room shapes
- Adapted to existing structures and technical spaces
- Project-specific access points and penetrations
- Engineered as one complete shielding system
Shielded room components
The complete room determines the final shielding performance. Every opening, connection and technical service must be integrated correctly.
Shielded Doors
EMI shielded doors for shielded rooms, secure facilities and EMC test environments.
EMI Filters
Power line filters that reduce electromagnetic interference entering or leaving shielded enclosures.
Ventilation Panels
Honeycomb ventilation panels that combine airflow with effective EMI shielding.
Cable Entries
Shielded cable entry systems for power, signal and data connections without compromising shielding performance.
RF absorbers
Microwave absorber materials for reducing reflections and improving EMC performance.
Shielded Visibility
High-performance shielded windows that maintain visibility while reducing electromagnetic leakage.
Waveguides
Waveguide penetrations for ventilation, pipes and cables while preserving shielding effectiveness.
Voxofaag noise generator
Controlled broadband noise generation for EMC testing and shielding verification.
Low Emmission LED panel
EMI-optimized LED lighting designed for shielded rooms and EMC-sensitive environments.
Shielding Effectiveness Monitoring System
Continuous monitoring of shielding performance for critical installations and secure facilities.
Our offer
From standard products to fully customized shielding solutions, engineering and project support.
A single weak point can affect the complete room
An untreated opening, unfiltered cable, poorly connected seam or incorrectly integrated door can create an electromagnetic leakage path. We therefore assess the complete shielded environment rather than only the wall or panel material.
Typical Faraday cage applications
Faraday cages and shielded rooms are used across industries where electromagnetic interference, information security or reliable testing must be controlled.
Defence and aerospace
Tempest shielded environments for military systems, aerospace electronics, secure communications and EMP-related applications.
Government and security
Tempest secure rooms for government buildings, communication systems, intelligence environments and public safety applications.
Datacenters and infrastructure
Tempest shielding for datacenters, telecom systems, utilities, energy installations and other critical infrastructure.
Research and laboratories
Controlled environments for universities, EMC laboratories, research institutes and sensitive scientific measurements.
Industrial and manufacturing
Shielded spaces for industrial automation, machinery, control cabinets, production equipment and EMC testing.
Medical and healthcare
Shielded environments for MRI systems, hospitals, laboratories, medical devices and interference-sensitive equipment.
Shielding performance verification
The shielding performance of a completed Faraday cage or shielded room can be verified by measurement. The frequency range, test positions, measurement method and acceptance criteria should be agreed before testing. A measurement report or shielding effectiveness certificate can be provided when required.
This can be relevant for:
- EMC test environments
- Pre-compliance testing
- TEMPEST-related rooms
- Secure communication environments
- Laboratories and R&D facilities
- Data centers and critical infrastructure
- Military, aerospace or defense-related applications
- EMP/HEMP/NEMP-related protection
- Environments with sensitive measurements or electronics

Frequently asked questions
What shielding performance can a Faraday cage achieve?
The achievable shielding performance depends on the construction, materials, frequency range, doors, filters, ventilation, cable entries and conductive connections. The required performance should be defined before the room is designed.
Can an existing room be converted into a shielded room?
Existing rooms can often be converted. The floor, walls, ceiling, doors, windows, ventilation and technical penetrations must first be reviewed.
Can ventilation and cooling be added?
Shielded ventilation panels, air-conditioning penetrations and cooling systems can be integrated without creating unnecessary electromagnetic leakage paths.
Can power, data and signal cables enter the room?
Power, data and signal connections can be integrated using suitable filters, waveguides, feedthroughs and shielded cable-entry systems.
Can the completed room be measured?
The completed room can be measured using an agreed frequency range, test method and acceptance criteria. A measurement report can be provided when required.
Information required for a shielded room quotation
Please provide as much of the following information as possible. Our engineers can help determine missing project details.
Room and construction
- Room dimensions and drawings
- New-build or existing location
- Floor, wall and ceiling construction
- Available installation space
- Required access and maintenance space
Required components
- Shielded doors and windows
- Power and signal line filters
- Ventilation and cooling
- Cable entries and waveguides
- Grounding and bonding requirements
Performance requirements
- Required frequency range
- Required shielding attenuation
- Applicable standard or test method
- Intended room application
- Required verification or certification
Need a Faraday cage or shielded room?
Send us your drawings, dimensions, performance requirements and project description. Our engineers will review your application and recommend a suitable shielding solution.
Contact our shielded room engineers →