Designed for InSinkErator Instant Hot Water Dispenser faucets, this revolutionary new tank has been engineered for durability, convenience and peace of mind. With a generous 2/3-gallon capacity, it provides 35% more near-boiling 200°F water than our previous model. With its top mounted expansion chamber and special aspiration system, this tank delivers on-demand flow and unmatched performance. A thermal protection system provides overheating protection, and the durable stainless steel core means longer life. Tool-free connections allow for easy installation or replacement.