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Ryno Board® is an extruded high density (HD), high-compressive, polystyrene foam board with double-thick clay coated bright white liners that add to its rigidity and structural performance. This high density foam board features improved resistance to crushing, warping and denting and is therefore highly recommended for signage and graphic applications that require a stronger, more durable substrate that remains stable after mounting and laminating. Other heavy duty options such as Gatorfoam Gator Board are available in white, black and kraft colors. Buy a high density foam board today from Foamboards.com.