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RF Shielded SCIF Doors & Accessories

Buy American Act Compliant

SRG Logo 

Made in the USA 
Shielding Resources Group, Inc. (SRG) is an innovative, reliable manufacturer of RF shielded enclosures and components. 
SRG offers high quality, competitively priced products, we also service RF/EMI enclosures for technical maintenance and problem resolution.

SRG is a national and internationally recognized brand name in the RF shielding industry for Sensitive Compartmented Information Facility (SCIF) and Tempest rooms.

SRG ULTRA-RF/A - RF Shielded Acoustic ICD 705 Tempest SCIF Doors

ICD 705 Compliant RF Shielded Door

RF Shielded SCIF Door   EMI Shielded SCIF Door


Standard 60dB



Enhanced Performance 80dB


Finally, a radio frequency shielded door that blends into its surroundings yet affords the RF shielding protection you require.

Designed For Commercial And Security Applications

Virtually Maintenance Free

Standard Two (2) Year Limited Warranty

STC 50 / NIC 50 Rated Acoustic Performance

Optional STC 52 Available

Exceeds The Shielding Effectiveness Requirements of NSA 73-2A, IEEE 299 and NACSIM 5204

RF Shielded Tempest Door 

SRG RF Shielded SCIF door being installed
SRG ULTRA-RF/A SCIF Door Being Installed


SRG ULTRA-RF/A SCIF Door Installed

RF Shielded SCIF Double Leaf Door
SRG ULTRA SCIF Double Leaf Door Installed

Advancing the “state of the art” technology in RF contact mechanisms, the ULTRA-RF/A series doors provide the opening and closing forces associated with conventional entry doors. 

The standard cylindrical passage lockset supplied with the ULTRA-RF/A series doors complies with applicable Americans With Disabilities ACT (ADA) Requirements and presents the image of a conventional office lockset. 

The passage lockset is ANSI A156.2 Grade 1 and UL Listed.   In the open or closed position, the ULTRA-RF/A maintains the appearance of a door, not a bank vault look. 

* US PATENT NUMBER 9,828,798


Standard STC 50 / NIC 50 Acoustic Performance

Optional STC 52 Available



The ULTRA-RF/A is furnished with a

 standard two (2) year limited warranty.

Metal stud framing


PERFORMANCE (60dB Shielding Effectiveness)
The ULTRA-RF/A (Standard Version) has the following performance levels when tested in accordance with IEEE 299, NSA 94-106 and NACSIM 5204:

Magnetic Field Electric Field Plane wave Microwave
10 KHz     30 dB 10 KHz   100 dB 50 MHz    100 dB 2 GHz   70 dB
100 KHz   50 dB 100 KHz   100 dB 100 MHz    80 dB 4 GHz   65 dB
1 MHz      60 dB 1 MHz    100 dB 400 MHz    80 dB 8 GHz   60 dB
10 MHz    75 dB 10 MHz   100 dB 1000 MHz  75 dB 10 GHz  60 dB
30 MHz    90 dB 30 MHz   100 dB 12 GHz    55 dB 18 GHz  40 dB

(S/E values are minimum performance)

PERFORMANCE (80dB Shielding Effectiveness)
The ULTRA-RF/A (Enhanced Performance Version) has the following performance levels when tested in accordance with IEEE 299, NSA 94-106 and NACSIM 5204:

Magnetic Field Electric Field Plane wave Microwave
10 KHz     30 dB 10 KHz   100 dB 50 MHz    100 dB 2 GHz   80 dB
100 KHz   50 dB 100 KHz  100 dB 100 MHz    100 dB 4 GHz   80 dB
1 MHz      60 dB 1 MHz    100 dB 400 MHz    95 dB 8 GHz   80 dB
10 MHz    80 dB 10 MHz   100 dB 1000 MHz  90 dB 10 GHz  75 dB
30 MHz    90 dB 30 MHz   100 dB   12 GHz  70 dB
      18 GHz  55 dB

(S/E values are minimum performance)


1.1       Door Leaf:       The door consists of a solid core and laminated leaf.  The sides and top of the door leaf are banded with a brass contact channel which is electro-mechanically bonded to the shielding media that is applied to the door face.  A brass contact angle is mechanically attached at the bottom of the door.  The standard door face finish is primed gray. As a option, the faces of the door can be supplied with a wood veneer or a high pressure plastic laminate (HPPL) which is “Natural Oak” in color.  (Other colors and or finishes are available on request)
1.2       Door Frame:     The door frame consists of a RF interface frame which the door jambs, sill and head are attached to.  The jambs, head and sill are 12 gauge galvanized steel. The door leaf and door frame are furnished as a complete assembly and are available in a “ADA flush sill” or “raised sill” configuration.

1.3       Hardware:         The ULTRA-RF/A is supplied with all hardware in a US26D finish and Clear Anodized  (which is Satin Chrome).  The hinge mechanism is a commercial grade, full surface, security hinge.  The hinge system is designed and installed so there is no contact between the RF seals and the hinge plates.  The standard lockset provided is a “passage” extra heavy duty lever handle which meets the Accessibility Guidelines of the Americans With Disabilities ACT (ADA), the Uniform Federal Accessibility Standards and ANSI 156.2, Series 4000, Grade 1.  Entrance, classroom, storeroom, privacy locksets and push/pull plate assemblies are available on request.
1.4       Threshold:        The ULTRA-RF/A is supplied with a steel or stainless steel threshold for both the flush sill and raised sill configuration.  The threshold is electro-mechanically attached to the door frame assembly. The threshold is available in single or dual tapers (for new or existing construction). The sill has a maximum height of ˝” (after installation of customer supplied flooring).

1.5       Standard Door Size:      The ULTRA-RF/A is supplied as a single leaf 3’-0” X 7’-0” standard which provides a clear finished opening of 2’-11” X 6’-11”.  The ULTRA-RF/A is available in other single or double door sizes on request.

1.6       Operating Force:      The ULTRA-RF/A is designed to be opened or closed with less than 20 pounds of push or pull pressure.

1.7       RF Contacts:     The ULTRA-RF/A is furnished with a single row of low pressure tin plated beryllium copper electrical contact strips. The contacts are installed on the door frame jambs and head section for a “flush” appearance. The contracts located at the bottom of the door are attached to a removable brass mounting angle. The contacts are designed and installed to be virtually maintenance free (since no lubrication of the door is required and they are protected by the door stops). Maintenance and or repairs can be performed at the user level. All repairs and maintenance can be accomplished with a Phillips head screwdriver, utility knife and scissors. The “ULTRA-RF/A” is also available in a high performance version which utilizes two (2) sets of electrical contacts.  For further information on this high performance version or USER upgrade of an installed ULTRA-RF/A, contact us for details.





The ULTRA-RF/A can be supplied with a STC 50 door leaf and STC-50 acoustic seal package (DTC-42 or NIC 50 rated), single or double cylinder deadbolts, door closers, magnetic switches, medium or high security combination locks (X-10, CDX-10 or other) or customer specified hardware. Customer specified hardware must be approved by SRG to insure RF performance.


MRI Door Hardware

RF Shielded SCIF Door Acoustic Seals

Electrical Contacts & Acoustic Seals


X-10 Security Lock

Kaba Mas X-10 Security Lock



Image result for LKM10K

Lockmasters LKM10K with Kaba Mas X-10 Security Locks and Hardware



Shielding Resources Group, Inc. (SRG) is a Certified Installer

for Kaba Mas LLC & Lockmasters Inc. Products

Ballistic Rated (Bullet Resistent) RF Shielded Doors

SRG offers RF shielded SCIF doors up to Ballistic Level 5
Level Bullet Caliber Shots
1 9mm (124g) FMJ 3
2 .357 Magnum (158g) SP 3
3 .44 Magnum (244g) SP 3
4 .30 Caliber Rifle (180g) SP 1
5 7.62mm Rifle (150g) FMJ 1
6 9mm Multi (124g) FMJ 5
7 5.56mm Rifle (55g) 5
8 7.62 Multi Rifle (150g) FMJ 8
8 (AP) 30-06 Rifle (166g) AP 8

UL 752 is the most common test method.
NIJ 0108.01 is one of the primary specifications used by the government and NCEL-MIL-SAMIT is generally used for military projects.

RF Shielded Air Vents

Lead-Free ROHS Compliant Honeycomb Waveguide

Patented RF Shielded waveguide
For Foil Shield Rooms

RF Shielded Air Vent with Man Bars
With Security Bars

Honeycomb Air Vent with Man Bars
With Man Bars

SCIF Air Vents with Man Bars
With Security Man Bars

RF Shielded Honeycomb Air Vent

RF Shielded Honeycomb Air Vent in Suspended Ceiling
In Suspended Ceiling

RF shielded air vent for drop ceiling
In Drop Down Ceiling

Shielding Resources Group, Inc. now offers 100% lead free honeycomb waveguide vent material. This material is provided to eliminate any and all concerns of lead contamination by airborn particles.

This material exceeds all domestic and international requirements for lead free electronics and is environmentally friendly. SRG's unique and proprietary manufacturing process includes applying a thin coating of 100% tin to the raw base strip base material.

The thickness of the coating is extremely critical and must be within .0015"-.002". After the base strip material is formed, cut to the desired length and assembled as a sheet, it is placed in an oven. Under a controlled set of parameters the temperature is raised until the tin coating is allowed to flow via capillary action, a process we have named fusion bonding. Once cooled, the sheet becomes a bonded or fused honeycomb matrix offering structural and RF intergrity.

To insure each manufactured sheet maintains the required performance level in terms of shielding effectiveness, SRG has implemented a very stringent Quality Control and Assurance Program which couples 100% visual inspection along with shielding effectiveness testing performed by a NVLAP approved independent test agency


The waveguide sheets are offered in 3 forms: standard cut sheets, custom cut sheet or mounted in frames.

Standard Cell Sizes (Hexcell Opening X Depth)

Honeycomb Cell Dimensions

1/8" x 1/4"

3/16" x 1/4"


1/8" x 1/2"

3/16" x 1/2"

1/4" x 1/2"

1/8" x 5/8"

3/16" x 5/8"


1/8" x 3/4"

3/16" x 3/4" 1/4" x 3/4"

1/8" x 1"

3/16" x 1"

1/4" x 1"

SRG RF Shielded Threaded Pipe Penetrations

RF Shielded Pipe Penetrations
RF shielded Pipe Penetration with Honeycomb

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An Electro Mechanical Research and Development (EMRAD) Corporation, Company

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