Gerber’s Maxwell is a WaterSense-certified, two-piece, dual-flush gravity toilet with 1.1-gpf or 1.6-gpf options. This toilet has an elongated rim, 12” rough-in and a double-nut, multipoint tank-to-bowl mounting system for easy installation and tank stability. It features a chemical-resistant silicone flapper, noncorrosive solid brass tank-to-bowl bolts and a non-kinking stainless-steel beaded chain. The large water surface and dual-fed siphon jet help keep the bowl clean. Gerber offers a limited lifetime guarantee on the Maxwell dual-flush toilet.