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Royal S4S Conceal System

It reveals everything awesome around it.

The Royal S4S Conceal Trim System makes life easier for the building professionals and homeowners who appreciate every detail-and every minute saved on installation and maintenance. We can modestly say that our hidden trim system is the best looking on the market. Plus it sides with virtually every kind of exterior material and is a particularly perfect match for Royal siding.

  • 100% cellular PVC
  • Closed-cell technology keeps face and edge surfaces clean
  • No exposed seams
  • Lifetime Never Rot Warranty
  • Moisture and termite proof
  • “True square” edge for clean installation
  • High energy efficiency