What the CTS 4110 is
Dometic CTS 4110 is a fixed cassette toilet for recreational vehicles. The bowl remains installed inside the bathroom while the 19 L waste cassette is removed through an exterior service door.
This arrangement gives the owner a home-like fixed toilet without a permanently installed black-water tank under the vehicle.
What “CTS” means in this model
In Dometic's CT4000 documentation, CTS 4110 is the freestanding version with a console and without an integrated flush-water tank.
Flush water therefore comes from the camper's own fresh-water system rather than from a separate tank built into the toilet.
MHS explanation.That makes the toilet dependent on the camper water supply. A plumbing or pump problem can affect flushing even if the waste cassette still has capacity.
Ceramic inlay
The current Dometic product page highlights the scratch-resistant ceramic inlay.
This is not a fully ceramic toilet body. Dometic describes the construction as significantly lighter than a purely ceramic toilet while keeping a ceramic contact surface in the bowl.
That is useful in a camper where hygiene and weight both matter.
19 L waste cassette
Dometic publishes 19 L waste-holding capacity.
That figure is the volume of the removable cassette, not a guaranteed number of days. Real autonomy depends on number of users and the amount of flush water used.
The cassette must be emptied at an appropriate waste-disposal point.
Electric flush and 12 V supply
The current product page lists 12 V DC input. Dometic's CT4110/CTS4110 manual identifies electric flushing and the need for sufficient water flow from the vehicle's fresh-water system.
A working 12 V supply and working water pump are therefore both part of normal operation.
Bowl rotation
Dometic states that the seat/bowl can be adjusted up to 90° in both directions.
That flexibility is valuable in a compact wet bath because the toilet can be rotated for sitting or to clear space when showering.
MHS explanation.Rotation still requires real clearance. A cabinet, shower wall or door can restrict the usable angle even if the product itself can rotate farther.
Size and weight
The current Dometic page lists dimensions of 382 mm width, 672 mm height and 530 mm depth. Net weight is 11.5 kg.
These are product dimensions. The installation also needs service-door clearance for removing the cassette and space for the bowl to rotate.
Service-door access matters
A cassette toilet is only convenient when the waste tank can be removed easily from outside.
Before buying or inspecting a camper, open the service door and remove the empty cassette. Check that jacks, steps, storage boxes or the vehicle bed do not block the removal path.
This practical check often matters more than the nominal bathroom floor dimensions.
Flush-water supply from the camper
The CTS 4110 does not rely on its own flush-water reservoir. It uses water supplied by the vehicle.
That simplifies the toilet itself but means the main fresh-water pump, pressure and winterizing procedure also affect the sanitation system.
If the camper is connected to city water, the whole water system still needs suitable pressure regulation.
Why this is different from C224-CW
The Thetford C224-CW in the MHS database has its own 9 L flush-water tank and manual flushing arrangement.
The CTS 4110 instead uses the camper's central water and electric control. These toilets solve a similar sanitation problem with different plumbing and electrical architecture.
This is why MHS keeps exact component models separate.
Winterizing
Because flush water comes from the camper, the line to the toilet must be included in winterization.
Emptying the waste cassette does not remove water from the flush line, pump or valve. The complete camper water-draining procedure should include this branch.
Level indication and daily use
The CTS 4110 provides an accessible control panel and waste-level indication.
A level indicator is useful for planning an emptying stop, but it should not be treated as a substitute for learning the real usage pattern of the occupants.
Do not deliberately overfill the cassette to test the indicator.
Cleaning
The ceramic inlay is designed to be easy to clean and resistant to scratching.
Use cleaning products compatible with Dometic sanitation components and seals. Strong household chemicals can damage plastics or rubber even if the ceramic surface itself tolerates them.
What to check in FWC Raven
The MHS research record for Four Wheel Campers Raven identifies the Thetford/Dometic CTS 4110 built-in cassette toilet in owner-support documentation.
At handover, confirm the data label and verify cassette removal, 12 V flush, fresh-water supply and level display. Check how the bathroom layout uses the bowl's rotation.
Also identify the winterizing step for the toilet branch. This matters particularly in a pop-up camper that may see freezing temperatures.
Naming: Dometic versus Thetford
Some camper documentation and aftermarket sources refer to the CTS 4110 alongside Thetford terminology, but the current product page is Dometic and lists the exact model CTS 4110 / SKU 9107100630.
MHS therefore titles the component under Dometic while preserving the camper evidence that identifies the installed CTS 4110.
Key takeaway
CTS 4110 is a compact fixed cassette toilet with a ceramic inlay, 19 L removable waste tank, electric 12 V flush and central fresh-water supply. Its usefulness depends on service-door access, water-system operation and enough bathroom clearance for bowl rotation.
Sources
Exact Dometic CTS 4110 / SKU 9107100630. Camper evidence can use mixed Dometic/Thetford naming; current component identity is anchored to the Dometic product page.