L Series, harvest color 18" diameter Laminate Cylinder Base for 48" Round, 42" Round, 120" Long or 96" Long Laminate Tops. Base includes adjustable leveling glides. Requires that you add 150 lb. of sand or other ballast for stability. Ballast permits smaller diameter base resulting in added kneespace. Base attaches to top with self-tapping screws. No drilling is required. Base and top are sold separately, so you need to order both. Each meets or exceeds ANSI/BIFMA and ISTA performance standards.