
The TN-T42-3B Three Station Commercial Toilet Trailer is a towable sanitation unit with three private restroom rooms, designed for construction sites, outdoor events, festivals and temporary facilities. Manufactured by Qingdao Tune Technology Co., Ltd., a company established in 2015 with a 4,500 m² production facility and exports to over 50 countries, this three-station commercial restroom trailer follows ISO 9001 quality management. CE, DOT, EPR and COC documentation is available for applicable configurations, with third-party inspection by SGS and Intertek.
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Item |
Specification |
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Model |
TN-T42-3B |
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Product Type |
Three-station commercial restroom trailer |
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Overall Size |
4,200 × 2,100 × 2,550 mm |
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Approximate Size |
13.77 × 6.88 × 8.36 ft |
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Reference Weight |
950 kg / 2,094 lb |
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Axle |
2 torsion axles with brakes |
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Reference Load |
Up to 3,000 kg, subject to final configuration |
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Tires |
4 × 195/70 R15 |
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Wall Material |
40 mm fiberglass sandwich panel |
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Fresh-Water Tank |
700 L stainless steel tank |
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Wastewater Tank |
1,300 L stainless steel tank |
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Toilet Type |
Foot-flush ceramic toilets |
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Urinal |
Men’s sensor urinal |
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Washing Facilities |
Hand-washing sinks |
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Faucet Type |
Push-button faucets |
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Water System |
Cold-water or hot-and-cold water system |
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Climate Equipment |
Air-conditioning system, where selected |
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Lighting |
Interior and exterior lighting |
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Exterior Color |
Customized according to approved color card |
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Towing System |
Trailer hitch with support components |
The dimensions and weight are reference values. The final gross weight changes after water, electrical equipment, air conditioning, water heaters and other optional components are added. The buyer confirms the loaded weight, hitch capacity and braking requirements before selecting a towing vehicle.


The reference configuration uses a 700 L fresh-water tank and a 1,300 L wastewater tank. The actual service interval depends on the number of users, toilet flushing frequency, hand washing, cleaning requirements and daily operating hours.
It is used as a Construction Site Toilet Trailer when the project has suitable access, stable ground, a cleaning schedule and an approved wastewater disposal method.
Yes. As an Events Toilet Trailer, the unit is planned for weddings, exhibitions, festivals, sports activities, private functions and temporary commercial venues.
Not necessarily. The built-in fresh-water tank supports operation at locations without a continuous municipal water connection. The tank is refilled according to actual consumption.
The position of toilets, sinks, urinal, mirrors, lighting, water heater, air conditioner, music equipment and electrical components is discussed before the final production drawing is approved.
The trailer uses two torsion axles with brakes and four 195/70 R15 tires. Towing suitability depends on the loaded weight, vehicle capacity, hitch connection, braking system and local road regulations.
Wastewater is removed through the specified outlet and transported to an approved treatment or disposal facility. It is not discharged onto roads, open ground or unauthorized drainage systems.
The Three Station Commercial Toilet Trailer is placed on reasonably level and stable ground. Before delivery, the buyer or project operator checks the entrance width, turning radius, unloading area and available parking space.
A site plan identifies:
● Trailer position
● User access route
● Service-vehicle access
● Fresh-water filling point
● Wastewater removal point
● Electrical connection
● Cleaning and storage area
● Safe distance from construction machinery
● Drainage and rainwater conditions
For a Construction Site Toilet Trailer, positioning avoids crane operating areas, excavator paths, material storage zones and routes used by heavy trucks.
For an Events Toilet Trailer, the unit is easy to find without blocking entrances, emergency routes, catering areas or pedestrian movement.
For an Outdoor Toilet Trailer, the operator considers wind exposure, rainwater, temperature changes, ground drainage and access for routine servicing.
The TN-T42-3B uses three private restroom stations. This layout suits buyers who need more service capacity than a single-station trailer while still requiring a relatively compact towable unit.
Each room is planned with a toilet, door, lighting and ventilation. The final arrangement is confirmed in a technical drawing because door positions, plumbing routes and maintenance access affect the available space.
The reference body uses 40 mm fiberglass sandwich panels. This structure provides an enclosed wall system with a fiberglass outer surface and an insulation layer.
Actual insulation performance depends on panel density, outside temperature, air-conditioning capacity, door opening frequency and installation quality. Buyers select the climate-control system according to the local climate and expected use.
The stainless steel tanks support independent operation at temporary locations. Tank capacity does not equal a fixed user capacity because water use varies between projects.
A busy event may require more frequent servicing than a low-traffic construction project. The purchase plan includes a practical refill and wastewater-removal schedule.
The reference configuration includes:
● Foot-flush ceramic toilets
● Men’s sensor urinal
● Hand-washing sinks
● Push-button faucets
● Dressing mirrors with lighting
● Air-conditioning system
● Music player system
● Interior and exterior lights
● Water pump
● Plumbing connections
Hot-and-cold water, water heaters, electrical equipment and optional sanitary accessories are listed separately in the quotation.


1. Park the trailer on suitable ground.
2. Extend the support equipment and stabilizer legs.
3. Fill the fresh-water tank with suitable water.
4. Inspect hoses, valves and visible pipe connections.
5. Test the water pump and faucets.
6. Operate each toilet and check drainage.
7. Test the urinal sensor.
8. Check lighting, ventilation and air conditioning.
9. Confirm that the wastewater outlet is closed.
● Monitor both tank levels.
● Clean sinks, toilets and high-contact surfaces regularly.
● Check for visible water leakage.
● Keep electrical panels and service doors accessible.
● Record unusual pump noise or equipment faults.
● Prevent unauthorized wastewater discharge.
1. Clean the toilets, urinal, sinks and floors.
2. Disinfect handles, faucets and other frequently touched areas.
3. Check water and drainage connections.
4. Empty the wastewater tank at an approved facility.
5. Rinse or service the system according to local procedures.
6. Protect or drain exposed pipes in freezing weather.
7. Disconnect the external power supply when required.
8. Record maintenance work for the next operating period.
The chassis supports the restroom body, tanks, sanitary equipment and electrical components. The reference model is equipped with two torsion axles with brakes.
Before towing, the operator inspects:
● Trailer hitch
● Safety chains
● Brake connection
● Electrical plug
● Tire condition and pressure
● Wheel fasteners
● Front support wheel
● Stabilizer legs
● Road lights
● Exterior doors
● Loose interior equipment
Water, air-conditioning units, water heaters and optional accessories increase the actual transport weight. The towing vehicle is selected according to the fully loaded trailer rather than the empty reference weight.
After relocation, the operator checks the trailer body, doors, chassis, pipes, tank connections and interior fixtures before reconnecting the water and electrical systems.
TUNE Supplier arranges inspection according to the approved order configuration. A practical inspection includes:
● Chassis and frame appearance
● Axle and tire installation
● Hitch and brake components
● Door alignment and sealing
● Fiberglass panel finish
● Fresh-water tank connections
● Wastewater tank outlet
● Toilet flushing
● Urinal sensor operation
● Faucet and pump performance
● Water-heater function, where installed
● Air-conditioning operation
● Interior and exterior lighting
● Ventilation system
● Stabilizer equipment
● Final appearance
● Packaging protection
Inspection records match the actual equipment supplied. Factory inspection, video inspection and pre-shipment inspection are included when specified in the purchase agreement.
Verified production photographs, inspection records, test results and approved project information are added to the product page. Customer names, certificates, reviews and project claims are published after confirmation and authorization.
The images above show CE, ISO 9001 and DOT documentation. CE marking applies to applicable electrical configurations; ISO 9001 covers the factory quality management system; DOT documentation relates to confirmed transport configurations. Specific certificate numbers and scopes are provided with the final order documents.
This three-station model is suitable for temporary facilities where the buyer needs private sanitation rooms and the ability to relocate the unit.
For construction projects, the main considerations are worker access, cleaning frequency, ground stability and wastewater service.
For events, the operator estimates peak visitor numbers and arranges cleaning personnel, consumables and tank servicing in advance.
For parks, campsites and seasonal markets, weather protection, public access, power supply and long-term maintenance are included in the operating plan.
The trailer is not a replacement for every permanent restroom project. Its suitability depends on transport access, local regulations, utility arrangements and the expected service period.
The packing method protects the body panels, doors, lighting, chassis, sanitary equipment and exposed fittings during transportation.
The delivery plan includes:
● Final technical drawing
● Equipment list
● Packing dimensions
● Gross weight
● Loading method
● Shipping documents
● Customs information
● Cargo insurance
● Unloading instructions
● Installation and commissioning notes
TUNE Factory provides operating instructions, water-system guidance, electrical troubleshooting, pump and faucet information, maintenance recommendations and spare-parts assistance.
Warranty terms are stated in the purchase agreement. Chassis parts, fiberglass panels, sanitary fixtures, electrical equipment, air-conditioning units, pumps, water heaters and third-party accessories may have different warranty conditions.
To prepare a project-specific quotation, the buyer provides:
1. Destination country and city
2. Intended application
3. Estimated daily or peak users
4. Planned operating hours
5. Service period
6. Required quantity
7. Towing vehicle information
8. Fresh-water filling method
9. Wastewater disposal arrangement
10. Electrical voltage and frequency
11. Air-conditioning or heating requirements
12. Preferred sanitary fixtures
13. Exterior color and logo
14. Local registration requirements
15. Expected delivery date
TUNE prepares a layout drawing, technical parameter sheet, equipment list, plumbing arrangement, electrical configuration, inspection checklist, packaging proposal and quotation for review before production.
Address
1711, Building B, Hisense Lingshan International, Yingzhu Sub-District, Huangdao District, Qingdao City, Shandong Province, China
