Our Royal Windsor window, porch and or patio planter boxes are made of durable vinyl (a more plasticized form of PVC) and are far lighter than wood. They feature a deep cavity and a internal water-minder(tm) insert to promote healthy plant growth. Their appearance is not as "wood-like" as our Estate Collection boxes but they offer a great value if you intend to have a mix of vines that cascade from your box. Royal Windsor Boxes are also finished on all four sides so they can be used as a free standing planter if desired. Price includes special mounting hardware. Custom lengths are available on a special order basis. Easy to paint with most latex or oil based paints.