12" Rough-In Two-Piece Elongated ErgoHeight™ Toilet, 1.28 gpf, White

Gerber Viper® GWS31518 ErgoHeight™ Elongated Toilet – 1.28 gpf, 12" Rough-In

The Gerber Viper® GWS31518 two-piece elongated toilet is engineered for performance and accessibility. Featuring ErgoHeight™ seating and a 12-inch rough-in, this model meets modern jobsite and code compliance needs while delivering efficient operation and dependable flushing power in both residential and commercial settings.

Key Features

• ErgoHeight™ Design: Chair-height seating provides added comfort and meets ADA height requirements when installed with appropriate seat
• 1.28 gpf High-Efficiency Flush: WaterSense® certified for reduced water usage without compromising performance
• Dual-Fed Siphon Jet: Boosts flushing power by delivering water to multiple bowl entry points
• Fully Glazed 2" Trapway: Minimizes clogs and improves waste clearance
• Vitreous China Construction: Durable, easy-to-clean material built for long-term use
• Brass Tank-to-Bowl Hardware: Non-corrosive components for secure and lasting installation

Technical Specifications

• Flush Rate: 1.28 gallons per flush
• Rough-In: 12 inches
• Bowl Shape: Elongated
• Seat Height: ErgoHeight™ (approximately 17" to rim)
• Trapway Size: 2 inches (fully glazed)
• Fill Valve: Fluidmaster® 400A
• Warranty: 15-year limited on components

Installation Notes

The GWS31518 model is compatible with standard floor flanges and is designed for a 12-inch rough-in. Multipoint mounting system and pre-installed gasket simplify installation. For optimal alignment and to meet plumbing code, professional installation is recommended.

Contractor Considerations

• ✅ ADA Compliance: Meets height standards with correct seat, suitable for accessibility applications
• ✅ Pre-Installed Fill Valve: Reduces onsite assembly time
• ✅ Efficient Water Use: High-efficiency performance helps meet local conservation codes