The Walpole Difference: the standard by which all other fence and outdoor structures are measured. Walpole's cellular PVC looks and feels like natural wood and best of all, cellular PVC is low maintenance - you don't have to repaint, repair, or replace it for years. Your fence and structures will look great season after season. Should you prefer natural over modern cellular PVC, Walpole's wood of choice since our founding in 1933 has been decay-resistant northern white cedar.