Description American Standard Adjustable Ballcock Toilet Fill Valve Adjustable Tower Height: Choose the size that fits your toilet tank. Adjust from 8 in. to 13 inches high Durable Construction: Made from high‑quality plastic for long‑lasting, reliable performance. Easy Installation: Anti‑siphon ballcock design replaces any American Standard or Mansfield model with ease. Included: (1) Float (1) Flapper (1) Tank Lever Standard Connection: Fits a 7/8‑inch bottom water inlet. Mansfield Part Number: 00010000 — Mansfield Ballcock A/S 10 – 181015