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The new two-piece Riose wall-outlet toilet is designed for retrofit jobs where the floor won’t accommodate a drain pipe. The gravity-only flushing system uses just 1.28 gallons per flush; clogging problems are addressed with an oversized 3.15-inch trapway and a 3-inch flush valve. The chair-height ADA-compliant bowl is elongated and includes a soft-close seat, and the inside of the bowl has an anti-microbial surface. The toilet costs $465.