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Properties Comparison Wood and engineered trims can't stand up to KOMA® Trimboards' lasting power. In addition to the properties listed below, consider KOMA Trimboards' fire resistance. Wood typically falls below the oxygen index value of 28% that is considered self-extinguishing. PVC, the material used in KOMA Trimboards, has an oxygen value well above the self-extinguishing level. Click here to view the MSDS for KOMA Trimboards.
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