The Gerber Plumbing GUF21377 Ultra Flush Pressure Assisted Elongated Toilet Bowl is designed for superior performance and water efficiency. Let’s explore the details: Bowl Shape: Elongated Bowl Height: ErgoHeight™ (ADA-compliant) Flush Volume Options: It offers three flush volume options: 1.0 GPF (gallons per flush) 1.28 GPF 1.6 GPF Rough-In Options: Available for both 10-inch and 12-inch rough-in installations. Trapway: Features a 2-inch fully glazed trapway for clog-free waste removal. Dual Fed Siphon Jets: Enhances the speed and power of the flush, ensuring a quick and clean bowl every time. Generous Water Surface: Provides thorough rinsing of the bowl with each flush. WaterSense Certified: This Ultra High Efficiency Toilet (UHET) saves over 30% more water compared to a standard 1.6 GPF toilet. However, regarding the specific 19-inch toilet bowl height, the information provided does not mention this exact height for the Gerber GUF21377 model.