Gerber Plumbing Fixtures expanded its Allerton Collection to include several high-efficiency toilet options. Offering 1.28 gallons per flush, each toilet is WaterSense-certified. Each configuration is available in white and biscuit with elongated versions also available in bone. The toilet can have a round front, elongated or elongated ErgoHeight configuration, and each is available in 10-in. and 12-in. rough-ins.