Gerber MX28990WH Maxwell Toilet Tank 1.6 Gpf White

Product Description

The GERBER MX28990WH is a replacement toilet tank for the Maxwell two-piece toilet series, designed for residential bathroom installations. Operating at 1.6 gallons per flush (GPF), the tank delivers front jet flushing action for consistent bowl clearing performance. Built with a 12-inch rough-in dimension and finished in white, it is intended for direct installation by licensed plumbers or experienced trade professionals completing toilet replacement or repair work.

The Maxwell tank is suited for residential bathroom applications requiring a standard 1.6 GPF flush volume. It pairs with Maxwell round front, elongated, and ADA elongated bowl configurations, making it a practical match for both new construction and retrofit projects where the existing rough-in measurement is 12 inches. The white finish integrates with standard white fixture sets common in residential construction.

Key Features

• 1.6 GPF (6 Lpf) flush volume meets standard water efficiency requirements
• Front jet flushing action for effective bowl clearing
• 12-inch rough-in dimension for standard residential toilet placement
• White finish for compatibility with standard fixture color schemes
• Compatible with round front, elongated, and ADA elongated Maxwell bowl configurations

Compatibility

Designed for use with the GERBER Maxwell two-piece toilet series, including round front, elongated, and ADA elongated bowl configurations with a 12-inch rough-in.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and flush the existing tank to remove residual water before beginning removal or installation. Verify the rough-in measurement and bowl configuration before mounting to ensure correct fit. Do not overtighten tank-to-bowl hardware, as cracking the porcelain is a common installation error.

Technical Specifications

• Flush Volume: 1.6 GPF (6 Lpf)
• Rough-In: 12 inches
• Color/Finish: White
• UPC: 671052631582

Standard Information

• Brand: GERBER
• Manufacturer Part Number: MX28990WH