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MHS · REMOVABLE MOBILE HABITATS

The global knowledge portal for removable mobile habitats.

Compare campers, understand their systems, solve technical questions, discover real journeys and follow the industry in one independent platform.

Explore campersTechnical knowledge
100-point ratingEvidence-based recordsTechnical knowledgeTravel & field reportsVerified incident evidence
01Camper DatabaseModels, profiles, specifications, evidence and MHS assessment→ 02TechnicalElectrical, heating, water, construction, controls and safety→ 03TravelJourneys, routes, destinations and real-world field reports→ 04NEWSProducts, manufacturers, technology, market and regulation→
POWERBatteries · Solar · Inverters CLIMATEHeating · Ventilation · AC WATERFresh · Grey · Hot water CONSTRUCTIONAluminium · Composites · Roofs FIELDRoutes · Failures · Lessons RELIABILITYIncidents · Exposure · Method

Top rated modules

The twenty highest ranked assessed configurations currently published by MHS.

RankManufacturer / ModelCountryEvidenceRatingClass
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MHS classes

The full MHS scale runs from 0 to 100 points.

How MHS works
A+90–100
A75–89.9
B60–74.9
C45–59.9
D30–44.9
E20–29.9
F0–19.9

MHS NEWS

Independent coverage of products, manufacturers, technology, market developments, events and regulation.

All news

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© MHS – Mobile Habitat StandardPublic rating
MHS CAMPER DATABASE

Explore removable campers.

Browse the MHS market catalog, filter by vehicle fitment and technical specifications, compare assessed products and open a structured profile for every published model.

–Catalog records
–Assessed
–Manufacturers
–Countries
⌕
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© MHS – Mobile Habitat StandardCamper Database
MHS TECHNICAL KNOWLEDGE

The engineering encyclopedia behind mobile habitats.

Understand the components inside a camper, how complete systems are built and how the engineering works in practice. MHS Technical connects equipment, system architecture, guides and confirmed camper installations.

Explore by system

Start with the subsystem you are trying to understand. Each system connects architecture, components, guides and camper installations.

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Technical records

Foundation records for the MHS Technical Knowledge Base.

One engineering layer across MHS

A camper profile tells you what product exists. Technical explains what is inside it, how the system works and which exact components are confirmed in real camper records.

COMPONENTA specific piece of equipment and its verified manufacturer data.
SYSTEMThe architecture that connects multiple components into one working subsystem.
GUIDEA practical explanation of an engineering question or design decision.
CAMPER LINKConfirmed installations connect technical records back to real products.
© MHS – Mobile Habitat StandardTechnical Knowledge Base
MHS TECHNICAL / SYSTEM 01

Power & Electrical

The electrical system is the energy backbone of a mobile habitat. This page shows the architecture from charging sources to storage, distribution, conversion, protection and monitoring, then links each layer to the MHS component and guide records that explain it.

System architecture

This is a conceptual architecture, not an installation wiring diagram. Exact cable sizes, protection devices, charging limits and grounding depend on the selected equipment and vehicle.

Vehicle alternator
→
DC/DC charger
→
House battery
Solar array
→
MPPT controller
→
House battery
Shore power
→
Inverter / charger
↔
House battery
House battery
→
DC distribution + protection
→
12 V loads
House battery
→
Inverter
→
AC loads
Monitoring sits across the architecture rather than in the power path: shunts, chargers, inverter/chargers and gateways report energy flow and device state without replacing hardwired protection.

What the system has to do

  • Accept energy from the vehicle, solar and shore-power sources that are actually installed.
  • Store energy in the house battery within the battery and BMS operating limits.
  • Distribute DC power with branch protection and service isolation.
  • Convert DC to AC when an inverter is part of the camper architecture.
  • Expose enough monitoring to understand battery state and charging behaviour.

MHS records in this system

← Back to Technical
© MHS – Mobile Habitat StandardMHS Technical · System architecture
MHS / Technical

Truma VarioHeat comfort: compact three-stage propane heating

North American propane air furnace with three heat levels, 12 V fan/control power and CP plus digital control.

Overview

What this heater is for

Truma VarioHeat comfort is a compact forced-air propane furnace for RVs. It heats cabin air rather than domestic water. That distinction matters when comparing it with Truma Combi, which combines heating and hot water.

This card is for the North American VarioHeat comfort. Do not use the European dimensions, weight or output values for this version.

Three heat levels

Truma publishes three input levels for the North American comfort model: 4,700, 8,900 and 11,500 BTU/h (1.4, 2.6 and 3.4 kW). The control system selects heating output according to demand rather than requiring the user to operate a fixed burner continuously.

MHS explanation.Maximum burner input is not the same as guaranteed cabin temperature. Camper size, insulation, outside weather and air distribution remain decisive.

Propane provides heat, 12 V moves and controls it

The heater burns propane, while the fan and electronics use 12 V DC. Truma lists 0.65 A, 2.75 A and 5.4 A for the three operating levels.

This matters for cold-weather autonomy. A full propane cylinder is not enough if the service battery is too low to operate the fan and controls.

Why warm-air distribution matters

A forced-air heater only works as a complete comfort system when the warm air reaches the occupied zones and return air can circulate properly. Duct restrictions, blocked outlets and poorly placed vents can create uneven temperatures.

The product's high airflow can help warm a small space quickly, but do not close outlets or change ducting without the installation guidance.

Night mode and noise expectations

Truma describes near-silent operation, intelligent fan control and a special night mode. These features aim to improve comfort, but no single noise number in this card is promised for every installation.

Cabinet mounting, ducts and surrounding panels can transmit sound differently. Evaluate the completed camper at the fan speeds you expect to use while sleeping.

CP plus control

VarioHeat comfort uses the Truma CP plus digital control panel in the documented North American system. The panel can set room temperature and supports timer functions; it can also coordinate with other compatible Truma systems.

MHS explanation.Compatibility with CP plus does not prove that a particular camper includes every other Truma device or automatic-climate feature.

Gas-system safety

The specified propane inlet pressure is 11–13 in. water column (27.4–32.4 mbar). That is a gas-system requirement, not something an owner should adjust casually.

Combustion air, exhaust, regulator, gas lines and leak testing are safety-critical. Installation and service should follow Truma instructions and applicable codes.

Size, mass and service access

The North American page gives dimensions of 135 × 483 × 284 mm and a weight of 9.0 kg. Those dimensions describe the appliance, not all required installation clearances.

Service access and the exhaust/air path need space too. A heater hidden tightly behind furniture may be difficult to inspect even if the box itself fits.

What to check in a camper

Confirm the label says VarioHeat comfort, not merely VarioHeat. Check the control panel, warm-air outlets, gas shutoff, 12 V supply and service access. During handover, run the heater long enough to feel how heat reaches the sleeping and seating areas.

If another product is also called VarioHeat in a brochure, do not assume its regional specifications match this card.

Key takeaway

VarioHeat comfort is a compact three-stage propane furnace whose practical performance depends on good warm-air distribution, reliable 12 V power and a correctly installed gas/exhaust system.

Source

Truma — VarioHeat comfort, North American product page

A practical handover test

When taking delivery, try a low and a higher room-temperature demand and listen for the heater and fan to change their behaviour. Then locate the warm-air outlets, gas shutoff and the 12 V isolation point. The aim is not to force maximum heat, but to understand how the completed installation responds before you need it on a cold night.

Where it fits

  • Propane space heating in North American campers
  • Compact forced-air heating in truck campers and vans
  • CP plus controlled heating installations

What to verify

  • Confirm North American VarioHeat comfort model
  • Check propane pressure and approved combustion/exhaust installation
  • Verify 12 V energy budget for fan operation
  • Inspect warm-air ducting and service access

Design notes

North American comfort variant. European VarioHeat comfort has different published ratings and physical data.

← Back to Technical
© MHS – Mobile Habitat StandardMHS Technical Record
MHS TRAVEL & FIELD

Documented journeys, not travel inspiration.

MHS Travel connects routes, vehicles, removable campers and field events into structured evidence from real journeys.

Published journeys0
Distance documented0 km
Countries0
Field events0
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Field evidence belongs to the product record.

A journey is useful when it records what actually happened: distance, weather, road mix, failures, repairs, autonomy and the exact vehicle/camper combination. MHS keeps those observations linked instead of turning them into disconnected travel stories.

Structured journey record
Route · dates · distance · temperatures · road mix · vehicle · camper · field events · source · evidence level.
Have a documented removable-camper journey?

Send MHS the source, route and equipment details. We can structure it as a field record.

Contact MHS
© MHS – Mobile Habitat StandardTravel & Field
MHS / Travel / Journey
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Journey

Field report

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← Back to Travel
© MHS – Mobile Habitat StandardMHS Field Record
MHS / Global Rating

Global Rating

Full published MHS list. Rank is determined by the current MHS assessment, while the public table shows only the information needed to identify and compare records.

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Current models–public catalog
Assessed–published MHS assessments
80+ score–public +40 scale
Top score–current public leader

MHS Top 10

The current leaders among models with a published MHS assessment.

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80+–
70–79.5–
60–69.5–
<60–
Rating filters are literal: no hidden weighting or recommendation logic is applied here.
RankManufacturer / ModelCountryEvidenceRatingClass
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© MHS – Mobile Habitat StandardFull public rating
MHS / Find My Habitat
MHS Match · BETA

Find the habitat that fits your use

MHS Match first removes modules that conflict with your hard requirements. It then compares the remaining products against your travel profile and priorities. MHS Score and Match Score are intentionally separate.

Matching logic
1Hard compatibility filters
2Must-have requirements
3Weighted personal fit
4Diverse 3–5 model shortlist

Vehicle compatibility

These answers create hard filters. A product that cannot fit the selected vehicle class or installation type is removed before scoring.

Step 1 of 4

How will you use it?

These inputs describe the operating environment and living profile. They affect Match Score, not the product’s MHS Score.

Step 2 of 4

Must have or just preferred?

A Must-have is a hard filter. Prefer affects the Match Score. Doesn’t matter is ignored.

Step 3 of 4
Four-season heating
Internal shower
Toilet
Air conditioning
Pop-up roof
Solar + lithium
Central digital control
Advanced safety monitoring

Choose your top priorities

Select up to three. They receive extra weight only after all hard filters are applied.

Step 4 of 4
3 of 3 priorities selected.
1,100 kg
No budget question: MHS does not filter the shortlist by price. You decide what you are willing to offer after seeing suitable modules.

Your MHS Match shortlist

The shortlist is intentionally diverse: Best Overall, Lightweight, Winter, Technology and Alternative.

Results
Vehicle–
Exact matches–
Priorities–
Max dry mass–
Prototype data warning: the matching logic is final-form, but the fit/feature attributes are still a prototype dataset. Before publication they must be populated from the audited MHS evidence database.

Interested in several candidates?
Select models and send the same buyer offer to all of them. MHS will create separate manufacturer enquiries internally.

What happens after you make an offer?

No account is required at the MVP stage.

1. MHS receives your requestYour contact details, selected module, vehicle, timeframe and price appear in the MHS admin queue.
2. MHS contacts the manufacturerWe manually send a structured enquiry from MHS. Your personal contact details are not automatically passed on.
3. MHS contacts youIf the manufacturer accepts, counters or asks for clarification, MHS follows up by email or phone.
© MHS – Mobile Habitat StandardMHS Match · v3.3
MHS / Reliability Research
MHS INCIDENT EVIDENCE

Reliability starts with evidence, not a ranking.

MHS is building a model-specific record of real failures, repairs and field incidents. The current phase measures evidence coverage and exposure. It does not name a “most reliable” camper before the data are comparable.

Current model coverage – / –
Loading verified incident evidence…
Verified incident cases–Distinct cases. A failure and its repair remain one case.
Incident source URLs–Unique public URLs supporting current-model incident cases.
Technical cases–Camper system, supplier component or unknown technical origin.
Failure / repair rows–Event rows in the journal; not the same as independent incidents.
Data collection phase

What the current numbers mean

Coverage tells us where MHS has verified incident evidence. It does not tell us which model is more reliable.

One problem = one incident case

If a component fails and is later repaired, MHS links those records to the same incident case instead of counting two failures. This prevents repair documentation from artificially worsening a model’s record.

The public case count is therefore intentionally lower than the number of failure / repair event rows.

Not every incident is a reliability penalty

Physical damage caused by an external event or by user operation can be useful field evidence, but it should not reduce technical reliability.

Technical
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External damage
–
User operation
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Evidence acceptance rules

The model identity and the incident itself must both be supported by the source.

Accepted

  • Exact camper model is identifiable from the source.
  • A concrete failure, repair or physical incident is described.
  • A public source URL can be reopened and checked.
  • Model year is retained when known, especially for long-running model names.
  • Official recalls count only when applicability to the exact model is explicit.

Rejected

  • General complaints about a brand or product family.
  • Problems reported for a neighboring model or uncertain subtype.
  • Normal maintenance, preferences or design annoyances without a failure.
  • Vehicle failures that are not failures of the camper.
  • Rumor, second-hand claims or a model guessed from photographs.

Why MHS does not publish a reliability ranking yet

A raw incident count is meaningless without exposure and independent users.

Four incidents across 180,000 documented kilometres can represent stronger field performance than two incidents across 8,000 km. MHS will only compare models when the evidence base is sufficiently broad.

100+models in a valid comparative sample
100,000 kmdocumented exposure per model
50+independent contributors per model

Source transparency

Every published incident must remain traceable to evidence.

What MHS publishes now

Incident cards expose the failure or repair, severity, system area, incident origin and a direct source link. The model page also separates Incidents from ordinary Field Observations.

What MHS does not claim

The number of web pages reviewed during the first research pass was not systematically logged. MHS therefore publishes the exact number of verified incident source URLs, but does not present an invented “pages screened” total or acceptance percentage.

Planned reliability metric

The principal exposure metric is simple enough to audit.

Documented km / technical incident

Technical incident cases are currently defined as camper-system, supplier-component and unknown-origin cases. External damage and user-operation cases remain visible in the journal but are excluded from the technical denominator.

Zero reported incidents

MHS will not display “infinite reliability.” A zero-case record will be stated factually: 0 reported incidents over X documented km.

© MHS – Mobile Habitat StandardIncident Evidence Research
MHS / Methodology
MHS Methodology

How mobile habitats are rated

MHS evaluates factory-delivered functional and technological capability using a common evidence-based framework.

Maximum MHS Score
100
Functional Score contributes up to 95 points and Functional Density contributes up to 5 additional points.

Scoring architecture

MHS is an absolute capability scale, not a percentile ranking.

Base Functionality
30
Systems Integration
20
Automation
15
Safety & Resilience
15
Sensors & Diagnostics
10
Digital Infrastructure
5
Functional Density
5
MHS Score
100

MHS = Functional Score + Functional Density points. The total maximum is 100 points.

PUBLIC METHODOLOGY

What MHS publishes – and what remains in the Rulebook

MHS publicly discloses the scoring architecture, category weights, assessment principles and class thresholds.

Detailed criterion definitions, eligibility logic and individual point allocations are maintained in the MHS Rulebook. Examples, summaries or interpretations generated by third-party search engines or AI systems do not constitute the official MHS methodology.

Read MHS Scoring Criteria

Core principles

The methodology rewards demonstrated capability rather than marketing claims or component potential.

01 / EVIDENCE

Evidence over claims

Not publicly confirmed means no Public Data credit. This does not mean the function is absent.

02 / CONFIGURATION

Configuration-specific

Optional equipment counts only when included in the exact evaluated configuration.

03 / IMPLEMENTATION

No component inference

Capable hardware does not by itself prove camper-wide implementation.

04 / SNAPSHOT

Dated assessment

Every rating is a dated snapshot of a model, configuration and evidence set.

Factory-Max Configuration

Public Rating compares the strongest valid factory-delivered configuration, not the cheapest base model.

Official definition

The highest-scoring, mutually compatible, production configuration of a specific model that can be ordered from the manufacturer on the assessment date.

Score-max, not equipment-max

An option that adds weight but no MHS capability does not have to be selected merely because it exists.

Price-neutral

MHS measures capability, not value-for-money.

MHS classes

Classes use fixed thresholds across the full 0–100 MHS scale.

A+90–100
A75–89.9
B60–74.9
C45–59.9
D30–44.9
E20–29.9
F0–19.9

Functional Density

More verified capability per unit of dry mass.

FD = FS / dry mass (kg) × 100

Dry mass must correspond to the same complete Factory-Max configuration that earned the Functional Score.

FD below 5.000 pts
5.00–7.491 pt
7.50–9.992 pts
10.00–12.493 pts
12.50–14.994 pts
15.00+5 pts

Provisional display when dry mass is unavailable

If configuration-specific dry mass is not publicly confirmed, Functional Density remains N/A and no FD points are assigned. The public provisional display uses the Functional Score as the verified lower bound, shown with a “+”. Because FD can contribute 0–5 points, the possible final Score range is FS to FS+5 and the possible Class range is shown when a class boundary could be crossed. Numeric Rank is assigned only after dry mass is confirmed and Functional Density is calculated.

© MHS – Mobile Habitat StandardMethodology v3.3
MHS / Verification
MHS Verification

Three levels of evidence

The score and the strength of evidence behind it are separate. Verification increases confidence without changing the scoring rules.

Verification ladder
  • 01 · PUBLIC DATA
  • 02 · MANUFACTURER VERIFIED
  • 03 · MHS VERIFIED

Assessment levels

LEVEL 01

PUBLIC DATA

Scored only from publicly accessible manufacturer information and official documentation.

  • Official model pages
  • Configurator / option lists
  • Owner manuals
  • Specification sheets
LEVEL 02

MANUFACTURER VERIFIED

The manufacturer confirms the evaluated configuration and supplies supporting evidence.

  • Configuration confirmation
  • Compatibility confirmation
  • Technical evidence
  • Configuration-specific dry mass
LEVEL 03

MHS VERIFIED

MHS directly verifies configuration and selected functional claims.

  • Inspection
  • Live demonstrations
  • Condition → action tests
  • Failure / fallback tests

What changes between levels

Verification elementPublic DataManufacturer VerifiedMHS Verified
Official public sourcesYESYESYES
Manufacturer confirmationNOYESYES
Non-public technical evidenceNOACCEPTEDACCEPTED
Live functional testingNOOPTIONALYES
MHS functional auditNONOYES

Manufacturer verification process

Manufacturers submit evidence, not score requests.

1

Submit model data

Identify model, region, model year and exact configuration.

2

Provide evidence

Submit official technical documentation and configuration proof.

3

MHS review

Check evidence quality, compatibility and criterion eligibility.

4

Record update

Publish new status, date and score if applicable.

Accepted evidence

  • Official manufacturer specifications
  • Factory order sheets
  • Technical drawings
  • Controller screenshots
  • Dry-weight documentation
  • Video or live demonstrations

Not sufficient by itself

  • Generic component datasheets
  • Dealer-added accessories
  • Marketing claims without support
  • Roadmap or “in development” features
  • Capabilities borrowed from another model
© MHS – Mobile Habitat StandardVerification Framework v3.3
MHS / About
About MHS

One common standard for mobile habitats

MHS is an independent rating framework for comparing functional and technological capability across manufacturers and markets.

Why MHS exists
Comparable products need comparable evidence.

Mission

Our mission

Make mobile habitats measurable

MHS provides a common language for assessing verified capability.

Our objective

Make evidence more important than claims

A feature is credited only when the evaluated model and configuration support it.

Core principles

01 / NEUTRALITY

Same rules for every manufacturer

Brand size, country, price and commercial relationships do not change scoring rules.

02 / EVIDENCE

Claims must be supported

Higher verification levels require stronger evidence.

03 / TRACEABILITY

Every score is dated

Model, configuration, assessment date, level and MHS version remain visible.

04 / CONFIGURATION

No imaginary builds

Factory-Max must be orderable, production-ready and mutually compatible.

05 / PRICE NEUTRALITY

Capability is not value-for-money

Price does not add or subtract MHS points.

06 / CORRECTION

Records can be revised

Better evidence and product changes can trigger a dated reassessment.

Scope

Currently in scope

  • Removable pickup-bed living modules
  • Slide-in truck campers
  • Flatbed pickup campers
  • Current production models
  • Regional variants when equipment differs materially

Outside current scope

  • Permanent motorhome conversions
  • Heavy expedition trucks
  • Travel trailers
  • Roof-top tents
  • One-off custom builds
  • Concept products not orderable

MHS scores are not for sale

Payment, sponsorship, advertising or commercial relationships do not purchase points, class, rank or favorable interpretation.

No paid score increases
No ranking changes for advertising
Corrections require evidence
No manufacturer veto over evidence-based results

What MHS is not

Not a value-for-money ranking

Price is outside the MHS capability score.

Not a popularity ranking

Sales volume and brand recognition do not add points.

Not a legal compliance certificate

MHS does not replace product certification or applicable legal standards.

Not a substitute for buyer priorities

Budget, service access, payload and intended use may still matter greatly.

Contact MHS

Questions, corrections, partnership enquiries or feedback about the platform.

© MHS – Mobile Habitat StandardAbout MHS
MHS / Submit manufacturer data
Manufacturer Submission

Submit manufacturer data

Provide official evidence to complete, correct or verify your model’s MHS record. MHS applies the same methodology to all manufacturers and does not negotiate scores.

Use this form to
  • Confirm Factory-Max configuration
  • Provide evidence
  • Correct outdated data
  • Request Manufacturer Verified review
  • Prepare for MHS Verified assessment

1. Manufacturer and model

2. Submission purpose

3. Evaluated configuration

4. Official sources

5. Technical evidence

6. Manufacturer contact

Prototype submission received. The live site would create an MHS review case and send a confirmation email.
© MHS – Mobile Habitat StandardManufacturer Submission
MHS / Campers / Manufacturer
MANUFACTURER PROFILE

Manufacturer

Current removable-camper model line in the MHS market catalog.

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Current models–market catalog
Assessed–published MHS assessments
Best score–public MHS scale
Average score–assessed models only

Current model line

Select up to four models to compare.

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© MHS – Mobile Habitat StandardManufacturer profile
MHS / Campers / Manufacturer / Model
Manufacturer · Country

Model

–
– Factory-Max PUBLIC DATA CURRENT

Find My Habitat
Country–
Global rank–among assessed
Position–current MHS Rating
Evidence–

What this score means

MHS measures maximum factory-delivered functional and technological capability. It is not a price, value-for-money, popularity or sales ranking.

Assessment basis

Public Data ratings award credit only for functions that can be confirmed from public manufacturer information. Not publicly confirmed means no credit. This does not mean the function is absent.

Evaluated configuration

Configuration–
Assessment Level–
Status–

Public record

This page shows aggregate public information only. Internal section scoring, individual criterion results and audit notes are not published.

Verification framework Submit manufacturer data
TECHNICAL PROFILE

Specifications

Manufacturer-published and MHS-verified model data. Unknown values remain unknown rather than being inferred.

EVIDENCE & FIELD USE

Assessment evidence & real-world use

Public assessment sources plus high-confidence Journey records linked to this exact camper model.

Representative journeys
ASSESSMENT EXPLAINER

Why this score

Publicly confirmed capabilities that help explain the published MHS assessment.

This is a public explanation layer. Internal criterion weights, detailed scoring rules and audit notes are not published.

Evidence & related records

Verified technical references, documented journeys and relevant MHS news linked to this model.

Technical

0
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Travel

0
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NEWS

0
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© MHS – Mobile Habitat StandardMHS Record