Nepco Sign Supply
(800) 327-7562
125 Amaral Street East Providence, RI 02915


Tough and Revolutionary Performance in Exterior Environments!
  • Sanded two sides (S2S) for a smooth, unprimed surface.
  • Moisture, rot and termite resistant.
  • No added urea formaldehyde; made from sustainable materials.
  • One piece solid substrate - not laminated.
  • Moisture resistant: As measured by ASTM D1037 for water absorption and thickness swelling.
  • Rot resistant: As measured by AWPA E-16 Field Test for Evaluation of Wood Preservatives To Be Used Out of Ground Contact: Horizontal Lap-Joint Method.
  • Termite resistant: As measured by AWPA E-7 Standard Method of Evaluating Wood Preservatives by Field Tests with Stakes.
  • 5-year limited warranty!
Extira is available from NEPCO in various thicknesses and sizes (call for pricing and availability)

Technical Documents

Extira Material Safety Data Sheet (MSDS)
Extira Warranty

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