Italian abbreviations

Looking to order parts for seats but not sure whether i want DS OR SN and also EST or INF. Translation needed please.

DS = Right side or Right hand drive
SN = Left side or Left hand drive

Not sure on EST or INF.

Thanks, Graham. EST & INF i think refers to outer & inner but of course i don`t want to guess and make an expensive mistake. The parts are the plastic covers on the sides of the seats.

In that case, with help from google translate, inner and outer translate to interno and esterno so presumably INF = Inner and EST = outer.

Graham, you are a genius, i couldn`t get anywhere on doogle, thanks very much.

DS -> destra -> right
SN -> sinistra -> left
EST -> esterno -> outer/outside
INT -> interno -> inside/inner

INF (?) -> inferiore -> lower

Thanks Gimmo, much appreciated.