Fits American Standard Cadet 3 Compact toilet tanks using model 4019, including variants 4019N and 4019001N series (all finish codes such as .020, .021, .222). Designed for 10" rough-in configurations.
Not compatible with standard 12" rough-in Cadet 3 tanks or other tank models (including 4021, 4037, 4149).
Verify tank model number stamped inside the tank before purchase.