Please fill out the form to request a quote. We’ll contact you shortly.
Radiation Shielded Lead Doors, Radiation-Proof Door
The Madoors USA Radiation Shielded Lead Door range provides superior quality lead-lined and neutron-shielded radiation protection doors meeting or exceeding all required specifications for radiation and X-ray shielding — available in four product series covering lead-lined wood doors, lead-lined hollow metal doors, neutron shielded doors, and industrial sliding doors for medical diagnostic imaging, radiation oncology cancer therapy, industrial X-ray and gamma radiation shielding, and linear accelerator facilities. All series meet NCRP report requirements and are available in multiple lead thickness levels to satisfy any physicist-specified shielding requirement from diagnostic X-ray protection through to high-energy neutron and gamma radiation shielding at linear accelerator facilities.
PRODUCT SERIES SPECIFICATIONS
LLWD-1100 Series — Lead Lined Wood Doors
The Madoors USA LLWD-1100 Series Lead Lined Solid Core Wood Doors are available in 10 standard lead thickness levels — providing physicist-selectable shielding levels from minimal diagnostic X-ray protection through to the higher shielding levels required for fluoroscopy and nuclear medicine rooms. Multiple natural wood and plastic laminate veneer options provide the finished appearance required for medical facility and institutional applications where the door must match the surrounding architectural interior without appearing as a specialized technical product.
Available in swing and sliding door assemblies for full installation flexibility in both new construction and retrofit applications. Installation applications include medical diagnostic imaging rooms — X-ray, fluoroscopy, CT, nuclear medicine — and industrial radiation shielding applications meeting NCRP reports 47 and 149.
LLHD-2100 Series — Lead Lined Hollow Metal Doors
The Madoors USA LLHD-2100 Series Lead Lined Hollow Metal Doors are available in 15 standard lead thickness levels — the widest standard lead thickness range available, providing shielding specification coverage from standard diagnostic imaging through to radiation oncology therapy room requirements. Available in primed steel construction with UL fire ratings up to and including 90 minutes — providing combined radiation shielding and fire resistance in a single door assembly for facilities where both requirements must be satisfied simultaneously.
Optional plastic laminate veneer faces provide interior finish options for medical and institutional environments. Available in swing and sliding door assemblies. Installation applications include radiation oncology cancer therapy radiation rooms — linear accelerator treatment vaults, brachytherapy suites, and simulation rooms — and industrial or NDT X-ray and gamma radiation shielding applications meeting NCRP reports 47 and 149.
LLHD-2100 Series — Neutron Shielded Doors
The Madoors USA Neutron Shielded Door series provides borated polyethylene and lead filled core construction for combined thermal neutron, fast neutron, and high-energy X-ray and gamma radiation shielding — available in swinging and sliding configurations. Door weight ranges from 1,200 lbs to 40,000 lbs per leaf depending on core shielding composition requirements — the full weight range required to satisfy shielding specifications from lower-energy linac facilities through to high-energy research accelerator and proton therapy installations.
Installation applications include oncology cancer therapy radiation rooms and linear accelerators meeting NCRP reports 38, 51, and 79 — the specific NCRP reports governing neutron-producing radiation facility shielding design.
ISD-3100 Series — Industrial Sliding Doors
The Madoors USA ISD-3100 Series Lead Lined Industrial Sliding Doors are available in 15 standard lead thickness levels in primed steel or stainless steel with overhead track and complete hardware. Single and bi-parting pair configurations accommodate any industrial radiation room opening width. Stainless steel construction is available for applications where the door surface is exposed to chemical cleaning, corrosive environments, or food-grade hygiene requirements.
Installation applications include industrial X-ray and gamma radiation shielding at NDT facilities, radiography bays, and industrial irradiation plants.
TECHNICAL SPECIFICATIONS
Lead thickness determines the attenuation factor — the ratio of transmitted radiation intensity to incident radiation intensity — at the door position. Lead thickness selection is the primary physicist design variable for each door application, with the required thickness calculated from the radiation source parameters — X-ray tube voltage or radioactive source energy, beam current or activity, distance from source to door, occupancy factor of the space beyond the door, and the applicable dose rate limit at the door exterior.
Pure lead sheeting spans the entire height of the door and extends to the edges — providing complete lead coverage across the full door face with no unshielded gap at the perimeter that radiation could bypass around the lead core. The lead extends to the door edges to maintain lead continuity at the door-to-frame interface — preventing the radiation streaming path through the door edge gap that would occur if the lead core did not extend to the physical edge of the door.
Lead-lined hollow metal door construction sandwiches the lead-lined inner core between two layers of metal — typically cold-rolled steel in a range of gauges — providing the structural shell that maintains door geometry under the operational loading of daily swing or slide cycles at the additional weight of the lead core. Hollow metal construction is preferred over solid metal for the combination of durability, forced entry resistance, and daily wear resistance. Reinforced hinging and hardware support the door's additional weight from the lead core throughout the service life.
The exterior surface of lead-lined steel metal doors in the standard configuration uses cold-rolled steel in a range of gauges — presenting a surface appearance indistinguishable from standard steel metal doors except for the additional door weight, providing radiation shielding in a door that assembles, installs, and looks like a standard steel metal door.
KEY FEATURES
10 Standard Lead Thickness Levels (Wood) — 15 Levels (Metal)
The 10-level wood door and 15-level metal door standard lead thickness ranges provide physicist-selectable shielding coverage across the full range of diagnostic and therapeutic radiation applications — from the thinnest lead levels required for low-energy diagnostic X-ray rooms through to the thickest levels required for high-energy therapy and industrial irradiation applications. Standard thickness levels eliminate the custom lead specification for the majority of applications, providing faster procurement and consistent pricing.
Full-Height, Edge-to-Edge Lead Coverage
Pure lead sheeting spanning the full door height and extending to all door edges ensures complete radiation attenuation coverage across the entire door face — the lead provides no gap, window, or reduced-thickness zone anywhere across the door panel through which radiation could bypass the shielded path. This complete edge-to-edge coverage eliminates the most common lead door shielding deficiency — edge gaps where reduced or absent lead allows radiation streaming around the door perimeter.
Up to 90-Minute UL Fire Rating — Lead-Lined Metal Doors
The 90-minute UL fire rating available on the LLHD-2100 series lead-lined hollow metal doors provides combined radiation shielding and fire resistance in a single door assembly — satisfying both the radiation protection requirements of the radiation facility and the fire compartmentation requirements of the building fire safety plan from one certified door product. Combined radiation and fire rating eliminates the need for separate fire-rated and radiation-shielded door layers at the same opening.
Neutron-Shielded Doors — 1,200 to 40,000 lbs
The neutron shielded door range covers the full weight spectrum from 1,200 lbs for lower-energy linac and neutron-producing facility applications through to 40,000 lbs for the highest-energy research and clinical accelerator facilities requiring the maximum available combined neutron and gamma shielding. This weight range comprehensively covers all linear accelerator therapy room, proton therapy vault, cyclotron facility, and research accelerator vault door applications.
Borated Polyethylene & Lead Combination — Dual-Threat Shielding
The combination of borated polyethylene for thermal and fast neutron shielding and lead for high-energy X-ray and gamma shielding in a single door core addresses the dual radiation threat present at high-energy linear accelerator and particle therapy facilities — where both photon beam radiation and photoneutron production must be simultaneously attenuated by the vault door to satisfy the applicable dose rate limits at the door exterior for both radiation types.
NCRP Report Compliance — Across Full Application Range
NCRP reports 47 and 149 compliance for diagnostic and industrial X-ray shielding, reports 38, 51, and 79 compliance for neutron-producing accelerator facilities — providing the specific regulatory framework documentation required by radiation protection authorities for operating license issuance across the complete range of radiation facility types served by the Madoors USA door range.
Primed Steel & Stainless Steel Industrial Options
Primed steel provides the standard industrial door surface for NDT radiography and industrial X-ray shielding applications where the door is periodically painted for appearance and corrosion protection. Stainless steel provides the corrosion-resistant, cleanable surface required for food industry irradiation plants, pharmaceutical sterilization facilities, and any industrial radiation application where chemical cleaning, washdown, and hygiene standards govern the surface material specification.
Natural Wood & Plastic Laminate Veneers — Medical Interior Integration
Natural wood and plastic laminate veneer options for the wood door series and plastic laminate face options for the hollow metal series allow the radiation-shielded door to match the surrounding medical facility interior finish — eliminating the visually discordant industrial appearance of unfinished steel or primed metal in hospital, clinic, and healthcare facility environments where patient experience and aesthetic quality are design priorities.
Licensed Medical Physicist Specification — Madoors USA Engineering Support
Lead thickness requirements for each specific application must be calculated by a licensed medical physicist based on the source parameters, geometry, and dose rate limits applicable to the specific facility. Madoors USA engineering supports the physicist specification process — providing technical door specifications, lead thickness availability, dimensional constraints, and weight information to assist the physicist's shielding calculation and door specification.
PRODUCT COMPARISON TABLE
LLWD-1100 Wood Door — 10 lead thicknesses, wood and laminate veneer, swing or slide, diagnostic imaging and industrial, NCRP 47 and 149.
LLHD-2100 Hollow Metal Door — 15 lead thicknesses, primed steel, up to 90 min UL fire rating, optional laminate veneer, swing or slide, oncology therapy rooms and industrial NDT, NCRP 47 and 149.
LLHD-2100 Neutron Shielded Door — borated polyethylene and lead core, 1,200 to 40,000 lbs, swing or slide, linac and oncology therapy rooms, NCRP 38, 51, and 79.
ISD-3100 Industrial Sliding Door — 15 lead thicknesses, primed steel or stainless steel, overhead track, single or bi-parting, industrial and NDT X-ray, NCRP 47 and 149.
ASSEMBLY & INSTALLATION SEQUENCE
Physicist Shielding Specification
The licensed medical or health physicist calculates the required lead thickness — and borated polyethylene specification for neutron-shielded applications — based on radiation source energy, beam parameters, distance, occupancy factor, and applicable dose rate limit. Door series, lead thickness level, and door configuration are confirmed from the physicist's specification.
Door Series & Configuration Selection
Door series — LLWD-1100, LLHD-2100, or ISD-3100 — swing or sliding configuration, fire rating requirement, veneer or surface finish, and UL listing requirement for masonry or non-masonry application are confirmed.
Lead Core Manufacturing
Pure lead sheeting is cut to the full door height and full door width extending to the edges. Lead layers are laminated within the door core to the confirmed total thickness — for neutron doors, borated polyethylene layers are positioned according to the physicist's specification for neutron moderation and capture layer sequence.
Door Assembly — Core Sandwiching
The lead-lined or BPE-and-lead core is sandwiched between the specified outer layers — cold-rolled steel in the specified gauge for hollow metal doors, or wood construction for the LLWD-1100 series. Reinforced hinge preparations and hardware reinforcement are incorporated during assembly for the additional door weight.
Surface Finish Application
Primed steel, stainless steel, natural wood veneer, or plastic laminate veneer is applied to the door faces as specified. UL fire rating intumescent elements are installed where specified.
Frame & Hardware Installation
The door frame is installed in the structural opening — with radiation shielding continuity maintained at the frame-to-wall interface through physicist-specified lead lining at the frame reveals. Reinforced hinges and hardware are installed to support the full door weight. Overhead track and hardware are installed for sliding door configurations.
Door Leaf Hanging & Radiation Survey
The heavy lead-lined door leaf is hung on the reinforced hinges or installed on the overhead track. A radiation protection survey is conducted with the door in the closed position — measuring transmitted dose rates and comparing against the physicist's design limits. Survey results are documented for regulatory submission.
DEPLOYMENT SCENARIOS & USE CASES
Madoors USA Radiation Shielded Lead Doors are specified for any facility requiring certified lead-lined or neutron-shielded door systems across medical, industrial, and research radiation applications.
- Hospital diagnostic X-ray room lead-lined wood doors
- CT scanner room lead-lined hollow metal doors
- Nuclear medicine facility radiation shielded doors
- Fluoroscopy suite lead-lined door assemblies
- Radiation oncology therapy room lead-lined doors
- Linear accelerator vault neutron shielded doors
- Proton therapy gantry vault shielded door systems
- Brachytherapy treatment room radiation doors
- Industrial NDT radiography bay sliding shielded doors
- Industrial X-ray inspection facility lead-lined doors
- Food irradiation plant stainless steel shielded sliding doors
- Pharmaceutical sterilization facility radiation doors
- Research accelerator facility neutron shielded doors
- Veterinary radiation facility lead-lined doors
- University research radiation laboratory shielded doors
- Category: Personnel Doors