Installing a SOG Unit on a Thetford Chemical Toilet - Our Tour Motorhome Blog
Campervanstuff.com's low-down on SOG toilet ventilation systems
Sog Type D For Thetford C400
SOG venting set Thetford C220 for side wall - dark gray | SOG Toilet Kits | Motorhome & Caravan Sanitary, Water System, Toilets | Camping Accessories | Reimo USA