my thetford cassette toilet has a small round hole in the top.
t appears to be part of the system ,
the toilet works and there is no smell apart from usuall chemical,.
Any ideas what the hole which is for etc or is there a bung missing ,
its about one of the earlest 1990
its 8m approx accross
regards paul
t appears to be part of the system ,
the toilet works and there is no smell apart from usuall chemical,.
Any ideas what the hole which is for etc or is there a bung missing ,
its about one of the earlest 1990
its 8m approx accross
regards paul