Gerber adds more Compact Elongated models to its Viper product line. The current bowl also is available with interchangeable tanks — 1.28 gpf (HE-28-570) or 1.6 gpf (VP28-595). The Viper CE is WaterSense certified when using the HE-28-570 tank. The two-piece CE model features a FluidMaster 400A fill valve, a 3” flush valve, powerful dual-fed siphon jets, a 2” glazed trapway, ErgoHeight 17” elongated, 10” rough-in, color-matched tank lever and two bolt caps. It is ADA compliant and available in white and biscuit.