Rv furniture is pretty basic across different brands of rvs.
Try to find a decal with the sofa brand / model.
RecPro or Qualitex are the two most used.
Google โrv jackknife sofasโ to match by pics , what you have if need be.
Then i would call that company, speak to a โtech personโ .
From experience, i would not email them , bc large companies tend to not monitor emails that closely.