My Garden Post Planter (Large) (Green) An innovative planter designed to be mounted on a post. Made of durable UV resistant plastic. Mounts firmly on std. wood posts measuring 2" x 4", 4" x 4" and 4" x 6". Not for use on vinyl posts larger than 31/2" x 31/2". Fuctional draining holes with plugs. Includes polished steel mounting bracket with predrilled holes and 3 screws.