Proper name and where to get ?

Apr 6, 2019
1,944
3,227
Eye, Peterborough, UK
Funster No
59,702
MH
C Class?
Exp
1999 Autocruise Impala, bought 2019
Hi. Need a piece of internal wall for a Year 2000 RV (Windsport).

Is it called "wall board"?

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