Wall Planters with attached liners for use on Walls, Fences, Porch and Deck Railings Wall Planters are constructed from heavy gauge steel wire coated in black plastic. 16" SINGLE WALL PLANTER 16" long x 8" wide x 7" deep holds six side plants, six top edging plants and one 6" or gallon size centerpiece plant Replacement Liners are available 20" SINGLE WALL PLANTER 20" long x 10" wide x 7" deep holds eight side plants, six top edging plants and two 6" or gallon size centerpiece plants Replacement Liners are available 20" DOUBLE WALL PLANTER 20" long x 10" wide x 10" deep holds twelve side plants, twelve top edging plants and two 6" or gallon size centerpiece plants Replacement Liners are available NOTE: Use 3" or 4-1/2" plants for sides and edges.