Gerber Plumbing offers 4 dual-flush toilets models in the lineup we track. This page is the Gerber Plumbing-specific cut of the broader Dual-Flush Toilets toilets category — same product class, narrowed to the Gerber Plumbing catalog only.
Gerber Plumbing Fixtures (Lincolnshire, Illinois — a subsidiary of Globe Union Industrial since 2007) has supplied US tract-builder bathrooms since 1932. Lines include Maxwell, Viper, Avalanche, Allerton, and Wicker Park. Gerber's niche is the entry-to-mid commercial spec range: 1.28 GPF or 1.6 GPF gravity toilets, ADA chair-height available throughout, and a parts supply chain that plumbers actually keep in their truck for flush-valve and fill-valve rebuilds.
For the complete Gerber Plumbing lineup across all sub-types and capacities, see the Gerber Plumbing Toilets hub.
If you're cross-shopping dual-flush toilets beyond Gerber Plumbing, the following brands also ship in this category:
A dual-flush toilet has two buttons (or a split lever): a half-flush for liquid waste — typically 0.8 to 1.1 GPF — and a full flush for solids at 1.28 to 1.6 GPF. The water savings are real over a year. The maintenance reality is less talked about.
A standard 1.28 GPF toilet uses a single flush mechanism — flapper or piston — that releases a fixed volume of water with each flush. A dual-flush uses a cylinder-style flush valve with two trip points: pressing the smaller button (or pushing the lever down) opens the valve for a shorter duration; the larger button opens it longer. The 3-inch or 4-inch valve seat at the bottom of the tank is larger than a traditional flapper, allowing higher-velocity water release in less time.
This design choice...
For the complete dual-flush buyer's guide (all brands, full comparison framework), see the Dual-Flush Toilets category hub.
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