Toilet Tank, White, 1.28 Gallons per Flush

Gerber GWS38594 Toilet Tank – 1.28 GPF High-Efficiency Gravity Flush

The Gerber GWS38594 is a high-efficiency gravity-fed toilet tank engineered for reliable performance in residential installations. With a 1.28 gallon per flush (GPF) rating, this unit supports water conservation compliance while maintaining effective waste removal when paired with compatible Gerber elongated or round-front bowls.

Key Product Features

• Low Consumption – Operates at 1.28 GPF to meet EPA WaterSense® and state efficiency standards.
• Gravity-Flush Technology – Utilizes standard gravity-fed flushing for consistent operation and ease of maintenance.
• Color and Finish – Vitreous china in white for compatibility with most residential bathroom environments.
• Includes Internal Tank Components – Supplied with factory-installed fill valve, flush valve, flapper, and trip lever.
• Tank-to-Bowl Mounting – Designed to pair with specific Gerber bowl models using standard tank-to-bowl hardware (sold separately if not included in the full kit).

Technical Specifications

• Model: GWS38594
• Flush Type: Gravity-fed, single flush
• Flush Volume: 1.28 GPF (4.8 LPF)
• Color: White
• Material: Vitreous china
• Mounting: Two-bolt connection to matching Gerber bowls

Installation Considerations

The GWS38594 tank is designed for use with Gerber two-piece toilet configurations. Ensure compatibility with the corresponding bowl model before installation. Use recommended tank-to-bowl gasket and bolt sets for watertight sealing. Follow manufacturer guidelines for alignment and torque specifications to prevent tank damage and ensure leak-free operation. All connections should comply with applicable plumbing code.

Applications

• Residential new construction or fixture replacement
• Upgrades to water-saving toilet systems in compliance with WaterSense® requirements
• Paired use with matching Gerber toilet bowls for full fixture assembly