Popular in front of office buildings, on college campuses, near malls, arenas or stadiums, distinctive EAGLE ArmorKraft Plastic Post Sleeves compliment any building or landscape design. Maintenance-free high-density polyethylene construction resists cracks, weather, and chemicals. Anchors directly to concrete, slips over a 4x4" treated post or 4x24" metal bollard post, or can stand alone when used with optional rubber base. 121/2" base.