MDO (Medium Density Overlay) Plywood is available in a thickness of 3/4". It is made with a resin treated fiber applied to both faces making it a smooth surface for painting. 
MDO Plywood Signs are routed and are available unfinished or painted. Unfinished signs are available at a lower cost and faster turnaround time for the customer to paint.

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Unfinished U.S.F.S Shields are shown.