The Allerton Collection from Gerber now features several high efficiency toilet options, all using just 1.28 gallons per flush. Each new model is WaterSense-certified and designed to be fast and quiet. Dual-fed siphon jets help keep the bowl clean. Available configuration include round front, elongated, and elongated ErgoHeight; colors include White and Biscuit, with both elongated configurations available in Bone. Each configuration can have a 10-inch or 12-inch rough-in.