Which Thetford portable toilet should you buy for camping or a campervan? The Porta Potti Qube 145 offers a manual bellows flush and a 324 mm seat. The Porta Potti 335 is worth considering for a small-format setup with an included Hold Down Kit. The Porta Potti 345 offers a lower seat and a 12-litre waste tank. The Porta Potti 365 offers a taller seat and a larger 21-litre waste tank. Choose according to available space, seating comfort and the weight you can manage when emptying.
This World of Camping buying guide compares specifications in our product listings for UK camping trips, caravan holidays and campervan stays, including trips around Cornwall. The 145's dimensions, seating height, weight and indicator details are based on a supplied retailer specification sheet, not independently checked manufacturer documentation. Its tank capacities remain awaiting confirmation. There is no single best Thetford toilet for every traveller: the best fit is the model that suits your setup.
Thetford Porta Potti 145, 335, 345 and 365: specification comparison
| Feature | Qube 145 | 335 | 345 | 365 |
|---|---|---|---|---|
| Flush-water tank | Awaiting confirmation | 10 litres | 15 litres | 15 litres |
| Waste-holding tank | Awaiting confirmation | 10 litres | 12 litres | 21 litres |
| Seating height | 324 mm | 308 mm | 324 mm | 408 mm |
| Overall size, height × width × depth | 330 × 383 × 427 mm | Confirm full dimensions before ordering | 330 × 383 × 427 mm | 414 × 383 × 427 mm |
| Flush mechanism | Manual bellows pump | Manual piston pump | Piston pump | Piston pump |
| Waste-tank level indicator | No | Yes | Yes | Yes |
| Empty weight | 3.6 kg | Confirm before ordering | 3.8 kg | 4.0 kg |
Seating height and overall height are different measurements. Check the linked product pages for current specifications, prices and availability before purchasing. Tank capacity is not a promise of a particular number of days between emptying.
Who should consider the Thetford Porta Potti Qube 145?
The Thetford Porta Potti Qube 145 portable camping toilet is worth considering when you want a manual bellows flush and a lower seat. Its listed dimensions are 330 × 383 × 427 mm, with a 324 mm seating height and 3.6 kg weight. The supplied specification sheet lists no waste-tank or flush-tank level indicator.
The 145 and 345 share the listed overall dimensions and seating height, but the 145 uses a bellows pump while the 345 uses a piston pump and has a waste-tank level indicator. Do not assume their tank capacities are identical. Confirm the 145's flush-water and waste-tank capacities before choosing it on capacity.
Who should consider the Thetford Porta Potti 335?
The Thetford Porta Potti 335 portable toilet suits shoppers prioritising a small-format toilet and a floor-securing option. It has a 308 mm seating height, separate 10-litre flush-water and waste tanks, manual piston-pump flushing and a waste-tank level indicator.
The included Hold Down Kit allows floor securing and quick release. Before choosing it for a boat, caravan or motorhome, confirm the full footprint, suitable mounting position and clearance needed to use it and remove the waste tank. Its low seat will not suit everyone.
Who should consider the Thetford Porta Potti 345?
The Thetford Porta Potti 345 portable toilet is worth considering when you want a lower seating position and a 12-litre waste tank. Its 324 mm seat is lower than the 365's 408 mm seat. The 345 measures 330 × 383 × 427 mm and has a 15-litre flush-water tank, piston-pump flush and waste-tank level indicator.
Check whether the lower height suits your storage area and the people who will use it. A smaller waste tank has less capacity, but you should still empty it before its weight becomes difficult to manage.
Who should consider the Thetford Porta Potti 365?
The Thetford Porta Potti 365 portable toilet is worth considering when a taller seat and larger waste capacity matter most. It has a 408 mm seating height, 21-litre waste tank and 15-litre flush-water tank, with piston-pump flushing and a waste-tank level indicator.
The Porta Potti 365 measures 414 × 383 × 427 mm. Its listed width and depth match the 345, but it is taller. The extra waste capacity may be useful for several users, although emptying frequency depends on use. Do not wait for the tank to fill if that would make it too heavy to carry safely.
How to choose a camping toilet for your tent or campervan
- Measure both the storage space and the area where the toilet will be used. Allow room for sitting, opening the lid and removing the waste tank.
- Compare seating heights. A compact toilet may fit well but feel too low for some users.
- Choose a waste capacity you can comfortably handle. More capacity also means potentially more weight when full.
- Plan for privacy and secure storage. Check model-specific fixing options; do not assume every toilet includes the 335's Hold Down Kit.
- Check disposal facilities and additive restrictions with your campsite before travelling.
For wider buying advice beyond these Thetford models, read Which Camping Toilet Should I Buy?. If you are deciding whether to bring your own facilities, see Shall I Take My Own Camping Toilet With Me?.
Which Thetford toilet fluids and extras do you need?
Thetford Aqua Kem Blue Concentrate 0.78L is a waste-tank toilet fluid. Thetford Aqua Rinse Plus Concentrate 0.75L is intended for suitable flush-water tanks. They perform different jobs and should not be treated as interchangeable. Follow the bottle instructions and your toilet manual for suitability and dosing, and check the campsite's additive requirements.
Thetford Aqua Soft dissolving toilet rolls are designed to dissolve in the waste-holding tank. Follow the manufacturer's preparation, cleaning and storage instructions for your model.
Thetford portable toilet FAQs
What is the difference between the Porta Potti Qube 145 and 345?
Both have listed dimensions of 330 × 383 × 427 mm and a 324 mm seating height. The 145 uses a manual bellows pump and has no waste-tank level indicator; the 345 uses a piston pump and has a waste-tank level indicator. The 145 is listed at 3.6 kg and the 345 at 3.8 kg. The 145's tank capacities remain awaiting confirmation.
What are the Porta Potti Qube 145's tank capacities?
The Qube 145's flush-water and waste-tank capacities are awaiting confirmation from the manual or packaging. Contact World of Camping before ordering if tank capacity is important to your choice.
What is the difference between the Thetford Porta Potti 345 and 365?
The Porta Potti 345 has a 12-litre waste tank and 324 mm seating height. The Porta Potti 365 has a 21-litre waste tank and 408 mm seating height. Both have a 15-litre flush-water tank, piston-pump flush and waste-tank level indicator. Both are listed as 383 mm wide and 427 mm deep.
Which model has the largest confirmed waste-tank capacity in this guide?
Among the 335, 345 and 365 specifications in our listings, the 365 has the largest waste tank at 21 litres. The 345 holds 12 litres and the 335 holds 10 litres. The 145's capacity is not confirmed here. Choose a capacity you can manage when carrying the tank for emptying.
Which of these Thetford toilets has the lowest seat?
The Porta Potti 335 has the lowest listed seating height at 308 mm. The 145 and 345 are listed at 324 mm, and the 365 at 408 mm. These are seating heights, not overall toilet dimensions.
Do the Thetford Porta Potti 345 and 365 need plumbing?
No. Our product listings describe the 345 and 365 as portable toilets that do not require a connection to a drainage or water system. Follow the manual for preparing and filling the toilet.
Is the Porta Potti 365 suitable for a campervan?
Consider the Porta Potti 365 if your campervan has space for its listed 414 × 383 × 427 mm dimensions, plus use and removal clearance. Its taller seat and 21-litre waste tank may suit your needs, but check secure storage and how you will carry the waste tank.
Does the Porta Potti 335 include a fixing kit?
Yes. Our Porta Potti 335 listing includes a Hold Down Kit for floor securing and quick release. Confirm that the kit and mounting position suit your intended setup.
Are Aqua Kem Blue and Aqua Rinse Plus the same?
No. Aqua Kem Blue is a waste-tank fluid; Aqua Rinse Plus is for suitable flush-water tanks. Use each only as directed on its label and in the toilet manual.
How often should you empty a Thetford portable toilet?
Emptying frequency depends on the number of users and frequency of use. Follow the manufacturer's instructions and use a waste-tank level indicator where fitted. The Qube 145 has no waste-tank level indicator listed. Empty sooner if carrying a fuller tank would be difficult.
Where should you empty a camping toilet on a UK camping trip?
Use the campsite's designated chemical toilet disposal point and follow its instructions. Confirm disposal arrangements and additive restrictions before travelling, including on camping trips in Cornwall.
Can I get advice about choosing a Thetford toilet in Cornwall?
Contact World of Camping for help comparing these models for your tent, caravan or campervan. If you plan to visit our Cornwall shop, confirm opening hours and whether the model you want is available to view before travelling. This guide does not confirm showroom display or collection stock.
Choose your Thetford toilet with World of Camping
Start with your measurements, preferred seating height and manageable waste-tank capacity. Compare the Porta Potti Qube 145, Porta Potti 335, Porta Potti 345 and Porta Potti 365, then check each product page for current pricing and availability. Ask World of Camping for help before ordering if you are unsure which model fits your setup.
