Palmetto Planters' Window Box Fiberglass Planter is a unique and special design we offer. These containers were designed with traditional style curves and soft edges. The slim design allows this fiberglass container to be place in small areas and its 48" length provides a considerable area to plant flowers or small-rooted plants. The Window Box Planters are constructed of 3/16" nominal thickness fiberglass and finished with your choice of quality finishes that Palmetto Planters offers.