SOG II System Kit Type F

Item No: 25308

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SOG II System Kit Type F

Download SOG Leaflet in Adobe PDF Format HERE

2 Year Warranty.

The SOG 2 Systems and Kits are designed to be vented through the floor as opposed to the cassette locker door and features a slightly different vent and filter (with some additional components).

Image for the product shows the SOG II System fitted to a C250 cassette.

SOG Installation Video



How the SOG System Works


The SOG ventilator is switched on as soon as the blade valve starts to open and is switched off again when the blade valve is closed. The fact that no smells can leave the waste holding tank is brought about by - as soon as the ventilator is switched on there is a suction effect in the waste holding tank which draws in fresh air through the blade valve. This down-flow acts as a seal and prevents the gases and smells from rising. The fresh air that is drawn in removes the new odours in the toilet bowl when it is being used.

The decomposition process for sewage and toilet paper is accelerated by the increased flow of oxygen so that no additional chemicals are required. Ordinary toilet paper, not special for chemical toilets, should be used so that this is decomposed completely.

The exhaust ventilator with its motor has been specially developed for sanitary systems. The power consumption, 0.43 watt, is very low.

Motorhome SOG System Kits


 The SOG Motorhome Toilet Ventilation System is the ecological solution for motorhome and caravan toilets.

Advantages over standard chemical toilets:-

    • It is 100% chemical free.
    • Low running costs as ordinary toilet paper can be used and no chemicals needed.
    • Low power consumption
    • Flexibility when wild camping etc as no requirement to use a chemical WC Toilet emptying point and normal toilets can be used for emptying due to the lack of chemicals. You can also empty whenever the chance arises safe in the knowledge that a fresh batch of chemicals isnt going to be wasted.
    • Unwanted aromas no longer present inside motorhome even when SOG System is in use.
    • Emptying process easier as the contents of the cassette are decomposed more than without SOG.

There are four kits for cassette type toilets and one kit for permanently installed tanks. These SOG Toilet kits have been constructed using traditional German engineering and know-how.

All Thetford waste holding tanks can be modified for the SOG toilet ventilation system.

The equipment makes the use of chemicals superfluous : optimal decomposition is guaranteed and unpleasant odours are removed including during use.


SOG Kit Type A for Cassette Types C2/C3/C4



SOG Toilet kit for motorhomes fitted SOG Toilet Kit Motorhome SOG Kit

NOTE: This is a self fitting kit for your existing thetford cassette. It is a very simple fitting process.

The kit comprises the following parts:-


    • SOG adapter to fit to the cassette
    • Fan for airflow that is integrated into the locker door
    • Hose section that allows air to travel from the cassette to the fan
    • Carbon filter that fits to the locker door and removes aroma passing through the fan .




SOG Toilet Kit B for C200 Type Cassettes

  • SOG Kit for C200

    SOG Toilet system for C200

    Motorhome SOG Kit for C200 Cassettes
    17 Litre waste holding tank in vehicles with rotatable toilet bowls No boring of holes necessary. The over pressure valve is replaced by a connecting piece. The filter housing with an active charcoal filter mat neutralises the gases at the outer wall of the vehicle.

    SOG Kit Type B for Ventilation through the roof 

    The special duct supplied with this kit for the C200 allows ventilation through the roof. The parts that we supply are standard parts for waste pipes, available at camping shops.

    SOG Kit Type D for C400

    Type D - For 19.3 litre tanks on wheels (model C400)

    SOG Thetford Kits are a simple yet extremely efficient addon for motorhomes.

    SOG Kit Type F for C250 Cassettes

    The Thetford C250 Cassettes are the brand new models with integrated wheels and telescopic handles as seen below.

    Thetford C250 Cassette Sog





Sog Kits for Motorhomes Q&As


Q1. What are the dimensions of the Filter Housing (The plate that covers the filter on the outside of the cassette compartment door)


A1. The filter housing is 7" High X 5 1/4" Wide, It can be fitted either horizontally or vertically (Some Rapido vans for instance require horizontal fitting)


Q2. What is the diameter of the hole to be drilled into the cap when fitting?

A2. 32mm



Q3. What is the diameter of the hole to be drilled through the floor for thepipe when fitting?

A3. 29mm

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  • Toilet Cassette: Thetford C260
  • Toilet Cassette: Thetford C250
  • Vent Type: Floor Vent

SOG II System Kit Type F Reviews

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Dear Outdoor bits, Extension arrived yesterday, fitted easily and we are “Happy campers”!! Thanks again for a great buy. Best regards Davy ... Read more...


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