The Arndt & Herman solution to the many drawbacks of wood moulding (splitting, cracking, warping, moisture and insect damage, etc.) is our unique cellular PVC moulding. Made from a custom blend of resins, it looks like wood, but lasts longer and requires much less maintenance. Because the vinyl is cellular, these products cut and nail better than wood and can be installed with either nails or glue. Installation can be done once and done right, saving you time and money.