Lead Lined Telescopic View Windows

Aluminum TSVW
Lead Lined Control Window

Lead Lined Telescopic View Windows

Ray-Bar Lead Lined Telescopic View Windows are manufactured for ease of installation in rough opening after wallboard is installed, with over 30 sizes “good in stock”. Designed for use in medical applications, it achieves a minimum lead equivalency of 1/16" (1.6mm), with X-Ray Protective Lead Glass factory pre-assembled into each of the Lead Lined Telescopic View Windows we sell. Standard frame construction is 16 gauge galvanized steel Jetkote/Paint lock.

Other available options of frame material are: hot dipped galvanized steel, powder-coated steel, stainless steel, aluminum, or anodized aluminum.

All of Ray-Bar’s X-Ray Lead Glass products are available factory set into these frames prior to shipment. All standard sizes are "ready to ship" in just 2 to 3 days. Custom sizes, frame profiles and material options are available in only 10 working days.


Ray-Bar proprietary lead lined telescopic view window frames are fabricated from 16 gauge Jetkote/Paint Lock material providing a rust resistant, paint ready surface, with 1/16" (4#) lead lining standard. Higher shielding value ratings are available upon request.


Our standard "in-stock" sizes available in 2 to 3 business days are:

8” x 10” 18” x 18” 24” x 36" 30" x 48" 36" x 84 " 48" x 48 "
10" x 10" 18" x 24” 24" x 42" 36" x 36 " 42" x 42 " 48" x 60 "
10” x 12”
12" x 12"
18” x 36”
18” x 42”
24" x 48" 36" x 42 " 42" x 48" 48" x 72 "
12" x 16" 20" x 20" 30" x 30" 36" x 48 " 42" x 60 " 48" x 84 "
12" x 24" 24" x 24" 30" x 36" 36" x 60 " 42" x 72 " 48" x 96 "
12" x 36" 24" x 30" 30" x 42 " 36" x 72 " 42" x 84 "  

Stock sizes are typically available "Ready To Ship" in only 2 to 3 days, with X-Ray Glass modularly factory installed and crated/boxed.

Custom sizes available in approximately 10 working days from date of order.

Higher lead equivalencies also available upon request.

Customer must order frame to match same shielding value in wall/partition that window occurs in.

Special Frame Options

All frame options listed below are available independently or in custom combinations with any of the listed options.


Our standard lead lined telescopic frames are ordered by actual glass size and fit into rough opening of 1" larger than glass size to allow 1/2" clearance around perimeter of the frame. The outside dimensions of our standard frame are 3" larger than glass size on x-ray side and 4-1/2" larger than glass size on control side.

Example: A 12" X 12" telescopic frame will fit into a rough opening of 13 " X 13 " and will have an outside dimension of 15" on x-ray side and 16-1/4" outside dimension on control side.

Please note: Dimensions vary for telescopic view window frames with special options.


Remove slip side of telescopic view window frame and install lead lined/lead glass portion on x-ray source side of rough opening. Install "Slip-Side" flange on control side of rough opening at same time and slide both pieces together tight to wall. Check to verify that frame is level and fasten with self-tapping pan head screws on flat flange portion. Always screw through both halves of frame, 6" on center (4 places minimum).

Aluminum TSVW
Color and Finish Options

Specialty Color and Finish Options

Many specialty options are available for our window frame finishes including: Aluminum, stainless steel, "Alumicoat" powder coat, any solid color powder coat and multiple wood grain finishes

Ray-Bar Staggered Off-Set Split Glass Shielded Windows

Staggered Overlapping Glass
  • Offers excellent clear view without mullions or obstructions
  • Provides natural voice passage communication with patients
  • Allows clear view windows up to 14'0" wide
  • Perfect for CT Scan, PET Scan and Angiography rooms
  • Many protective shielding levels available
  • Optional Impact Resistant X-Ray Safety Glass
  • Available with lead lined frames

Ray-Bar manufactures custom "Staggered Off-Set Split Glass Window" designs that provide radiation shielding protection and eliminate the need for vertical mullions and T-Joints. This allows a clear view in larger size windows while providing the additional advantage of clear natural voice communications between the medical technician and patient during PET or CT imaging procedures. This unique design utilizes 2, 3, or 4 panes of overlapping X-Ray Glass (or safety glass) panels on the vertical sides. Contact us for additional technical design information.

Ray-Bar Lead Lined Telescopic View Window Frame with X-Ray Glass and Light Proof Privacy Door

This product line is available exclusively from Ray-Bar and is ideal where protection of the patient’s physical privacy is required to meet the new Federal HIPAA compliance regulations. It is also utilized when the control room is also the x-ray film developing room, thus requiring a light proof window for developing radiographic films. The Ray-Bar Lead Lined Telescopic View Window Frame has all the advantages of Ray-Bar's standard telescopic window frame but with a special privacy "door" that is light proof. The magnetic-hold catch allows the technician flexibility and function control. These units are available in standard 4# (1/16") lead lining with x-ray glass. Higher shielding equivalencies are available upon request. Contact us for more information on this very unique product.

Ray-Bar Lead Lined Shielded Retro-Fit Window Frame Cover

  • Easy to install over existing hollow metal frame
  • Includes lead shielding and X-Ray Glass
  • Available primered or solid color powder coated
  • Optional Impact Resistant Glass
  • Many protective shielding levels available
  • Typically available in only 12 working days

Ray-Bar's exclusive proprietary Lead Lined Shielded Retro-Fit Window Frame Cover is provided as a completely modular unit with internal lead lining and X-Ray Glass. This provides radiation protective shielding over existing standard interior or exterior windows without requiring expensive and disruptive demolition or reframing. This easy-to-install retro-fit system literally takes minutes to install over your existing window frame system. It is available with the same construction materials as our Lead Lined Telescopic Steel View Window Frames.

Hollow Metal Lead Lined Welded Window Frames

  • Only offered if purchased with Ray-Bar X-Ray Lead Glass or X-Ray Safety Glass.
  • Available in sizes from 12" x 12" and up to 48" x 96".
  • Hollow Metal Welded Window Frames are 16 gauge primered steel with anchors for metal studs,wood studs or concrete "cast in place" or retro-fit bolt-anchor (Hilti) into existing concrete or masonry walls.
  • Equal rabbet or single step rabbet frame profiles can be formed to fit wall thicknesses from 5" up to 24"
  • Heavier 14 gauge or 12 gauge hollow metal frames available for higher radiation lead shielding applications.
  • Welded Frames must be installed in place prior to any lead backed drywall.
  • Lead Lined Welded HM frames typically available in approximately 15 to 21 working days
  • Customer must order frames with same lead thickness as in wall or partition.
  • Customer must order frames internally lead lined on same side as radiation.
  • Available in 12 lead thickness levels of internal shielding within frame throats.
  • Available Labeled as Fire Rated with Ceramic Fire Resistant Glass

Ray-Bar PET/CT/MRI Shielded Window Assembly

Ray Bar’s Multi-Shielded Medical Imaging Control Window is for new or retro-fit applications in PET/MRI, PET/MMR or CT/MRI dual imaging modality rooms. These rooms require a radiation protective aspect for shielding against x-ray gamma radiation during Positron Emission Tomography (PET Scan) or Computerized Tomography (CT Scan) imaging procedures while also shielding against electro-magnetic and radio frequency spectrum energy fields for the Magnetic Resonance Imaging (MRI) procedures. This window assembly is available as a complete new modular unit or as a retro-fit shielded "cover" to fit over an existing control window assembly, and is an excellent choice overall for protecting either medical personnel and / or sensitive electronic equipment from harm, crosstalk or interference from electro-magnetism or radiation exposure depending upon your projects unique design.

Medical X-Ray Radiographic Diagnostic Imaging Control View Window Design Requirements

NCRP #49 requires under Radiographic Installations 5.3.2: "Provision shall be made for the operator to observe and communicate with the patient from a shielded position at the control panel. When an observation window is provided, it shall have a lead equivalence at least equal to that required of the partition (or the door) in which it is located."

The current AIA and FGI Guidelines for Design and Construction of Health Care Facilities requires under Shielded Control Alcoves "Each x-ray room shall include a shielded control alcove. This area shall be provided with a view window designed to provide full view of the examination table and the patient at all times, including full view of the patient when the table is in the tilt position or the chest x-ray is in use."

NCRP #147 requires under Types of Medical X-Ray Imaging Facilities, Radiographic Installations 2.2.1: "The control booth shall have a control window or viewing device that allows the operator to view the patient during all x-ray exposures performed in the room. The operator must be able to view the wall bucky and x-ray table, as well as patients confined to stretchers. When an observation window is used, the window and frame shall provide the necessary attenuation required to reduce the air kerma to the shielding design goal. The window(s) should be at least 45 x 45cm (18" x 18") and centered 1.5m (60") above the finished floor."

* Please note the above uses of the word "shall" is a requirement, and use of the word "should" is a recommendation.

DOA Technical Manual TM 5-805-12 and DOD Unified Facilities Criteria UFC 3-190-03A "X-Ray Shielding" both state: "Leaded Glass: The leaded glass is a clear lead glass sheet approximately 1/4" inch thick and is installed in single or multiple thicknesses to provide a lead equivalent not less than that of the partition or door of which it is a part of".

ICRP Publication#44 "Protection of the Patient in Radiation Therapy"(33): "There must be a means for observing the patient continuously during treatment. This may be accomplished by use of a lead-glass window,"

IAEA Chapter 16 "Radiation Protection and Safety in Radiotherapy" 16.10: "Adequate systems, devices or other means should be provided to allow operator to have a clear and full view of the patient. The systems for patient observation should be redundant and independent (e.g. closed circuit television or lead windows, depending on type of treatment unit)".

*Please Note these important considerations:

All television or electronic camera systems require skilled maintenance and service, and have the potential of failing, having picture loss and component problems. An x-ray lead glass control window provides a continuous view of patient, equipment and room, and has no maintenance other than occasional cleaning.

Additional Safety Design Consideration

Per ANSI Z.97.1 and CPSC 16 CFR 1201 Category 2 standards, any x-ray control window occurring within 24" of a door opening, or any vision lite window occurring in a shielded door must have impact resistant X-Ray Safety Glass, and be permanently labeled as meeting these required impact resistant standards.

Please Note: X-Ray Lead Glass cannot be tempered as it is physically impossible due to its low melting temperature and surface characteristics as it will not survive the thermal tempering process or accept a chemical salt bath regardless of the manufacturer; however X-Ray Lead Glass is NOT REQUIRED by any safety code to be "tempered". The good news is Ray-Bar X-Ray Safety Glass meets all current glass safety codes for impact resistance and is permanently labeled accordingly as per ANSI Z97.1 and CPSC 16 CFR 1201 Cat 2 and IBC 2406 requirements for hazardous locations indoors and this is particularly applicable in a medical facility environment.

Click here for the Lead Thickness Chart.

Click here for the Powder Coat Color Chart.

Contact Us to Order Custom Lead Lined Telescopic View Windows for Your Application

If you need superior radiation shielding solutions for a medical, hospital or industrial NDT facility, look no further than Ray-Bar Engineering. Ray-Bar is a trusted global leader in designing and manufacturing X-ray protection and radiation shielding materials for medical, hospital  and industrial NDT environments. With over 80 years of expertise, Ray-Bar offers a full range of USA-made products that comply with all applicable U.S. and international radiation safety and building standards.

Contact us or request a quote to learn how Ray-Bar can provide comprehensive radiation shielding solutions tailored to your application's needs. To view our full line of industry-leading radiation protective products, visit Ray-Bar Engineering Corporation today.