Kleer Lumber seals the edges of its PVC Trimboards with TruEdge technology for a smooth edge finish that wipes clean and resists staining. Made from expanded cellular PVC, the trim has a density similar to white pine but resists moisture and insects and will not rot, mildew, cup, split, or warp, the company claims. The boards range in thickness from 1/4 inch to 1-1/4 inches. 866.553.3770. www.kleerlumber.com.